Agent skill

Apply Mantel Styles

Provides guidelines for applying Mantel's brand styles to diagrams and frontend components.

Apache-2.0Auto-check passedMedia & Creative

Install Apply Mantel Styles

skills CLI

$ npx skills add sammcj/agentic-coding --skill apply-mantel-styles -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install sammcj/agentic-coding apply-mantel-styles --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/sammcj/agentic-coding.git skills-src && mkdir -p .claude/skills && cp -r skills-src/Skills/apply-mantel-styles .claude/skills/apply-mantel-styles && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "apply-mantel-styles" agent skill from https://github.com/sammcj/agentic-coding/tree/main/Skills/apply-mantel-styles into .claude/skills/apply-mantel-styles/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "apply-mantel-styles", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/sammcj/agentic-coding/tree/main/Skills/apply-mantel-styles

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add sammcj/agentic-coding --skill apply-mantel-styles -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install sammcj/agentic-coding apply-mantel-styles --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/sammcj/agentic-coding.git skills-src && mkdir -p .agents/skills && cp -r skills-src/Skills/apply-mantel-styles .agents/skills/apply-mantel-styles && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "apply-mantel-styles" agent skill from https://github.com/sammcj/agentic-coding/tree/main/Skills/apply-mantel-styles into .agents/skills/apply-mantel-styles/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "apply-mantel-styles", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add sammcj/agentic-coding --skill apply-mantel-styles -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install sammcj/agentic-coding apply-mantel-styles --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/sammcj/agentic-coding.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/Skills/apply-mantel-styles .cursor/skills/apply-mantel-styles && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "apply-mantel-styles" agent skill from https://github.com/sammcj/agentic-coding/tree/main/Skills/apply-mantel-styles into .cursor/skills/apply-mantel-styles/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "apply-mantel-styles", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/sammcj/agentic-coding.git --path Skills/apply-mantel-styles

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add sammcj/agentic-coding --skill apply-mantel-styles -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install sammcj/agentic-coding apply-mantel-styles --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/sammcj/agentic-coding.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/Skills/apply-mantel-styles .gemini/skills/apply-mantel-styles && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "apply-mantel-styles" agent skill from https://github.com/sammcj/agentic-coding/tree/main/Skills/apply-mantel-styles into .gemini/skills/apply-mantel-styles/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "apply-mantel-styles", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install sammcj/agentic-coding apply-mantel-styles

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add sammcj/agentic-coding --skill apply-mantel-styles -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/sammcj/agentic-coding.git skills-src && mkdir -p .github/skills && cp -r skills-src/Skills/apply-mantel-styles .github/skills/apply-mantel-styles && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "apply-mantel-styles" agent skill from https://github.com/sammcj/agentic-coding/tree/main/Skills/apply-mantel-styles into .github/skills/apply-mantel-styles/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "apply-mantel-styles", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add sammcj/agentic-coding --skill apply-mantel-styles -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install sammcj/agentic-coding apply-mantel-styles --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/sammcj/agentic-coding.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/Skills/apply-mantel-styles .opencode/skills/apply-mantel-styles && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "apply-mantel-styles" agent skill from https://github.com/sammcj/agentic-coding/tree/main/Skills/apply-mantel-styles into .opencode/skills/apply-mantel-styles/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "apply-mantel-styles", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: apply-mantel-styles
GitHub stars: 162
Token cost: ~3.6k tokens
SKILL.md length: 1,090 words
Files: 10 (incl. assets)
Skills in repo: 64
Repo updated: Oct 9, 2026
First seen: Oct 7, 2026
Licence: Apache-2.0

At a glance

Provides guidelines for applying Mantel's brand styles to diagrams and frontend components.

Works in 5 steps: Primary Actions/Elements: Ocean (#1E5E82) → Secondary/Supporting: Sky Blue (#81CCEA) → Emphasis/Accent: Flamingo (#D86E89) → …
Asked to create visuals that need to align with Mantels branding
SKILL.md covers Colour Scheme, General Design Principles, Frontend Component Styles and Fonts & Typography, plus 2 more sections
Reaches rsms.me

What it does

Apply Mantel Styles is an agent skill from sammcj/agentic-coding. Provides guidelines for applying Mantel's brand styles to diagrams and frontend components. Use when asked to create visuals that need to align with Mantel's branding.

Its SKILL.md is about 3.6k tokens, which your agent loads only when the skill is triggered. The skill folder holds 11 other files, including assets (for example `resources/diagrams.md`).

It sits in Media & Creative, covering Logo and visual identity and Diagrams. The repository describes itself as: Agentic Coding Rules, Templates etc... The licence is Apache-2.0.

When your agent uses it

Asked to create visuals that need to align with Mantels branding
Tasks that involve Logo and visual identity
Tasks that involve Diagrams

Example prompts

“Use the apply-mantel-styles skill to provide guidelines for applying Mantel's brand styles to diagrams and frontend components”
“/apply-mantel-styles”

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

Primary Actions/Elements: Ocean (#1E5E82)
Secondary/Supporting: Sky Blue (#81CCEA)
Emphasis/Accent: Flamingo (#D86E89)
Foundation/Authority: Deep Ocean (#002A41)
Background/Neutral: Cloud (#EEF9FD)

What it can do on your machine

Read from SKILL.md and the folder at commit 2f25ced. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are css, javascript and html).
From the folder's file list and the shell code blocks in SKILL.md.
Network
Hosts in commands or code, which the agent is likely to contact:
- rsms.me
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Apply Mantel Styles loads about 3.6k tokens when it runs. Until then it costs about 47 tokens; SKILL.md has 1,090 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~47
When it runs · the whole SKILL.md, loaded when a task matches: ~3.6k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from sammcj/agentic-coding at commit 2f25ced, republished under its Apache-2.0 licence (© sammcj). 1,090 words, ~3,641 tokens.

Download SKILL.mdSave it as .claude/skills/apply-mantel-styles/SKILL.md (or your agent's skills folder). This skill also uses 9 other files; get the full folder from GitHub.

name: apply-mantel-styles
description: Provides guidelines for applying Mantel's brand styles to diagrams and frontend components. Use when asked to create visuals that need to align with Mantel's branding.

Rules For Applying Mantel Brand Styles

When creating visual diagrams or frontend components, you can apply the following style guidelines to ensure consistency with the Mantel brand identity.

Colour Scheme

You should aim to use the following primary colours from the Mantel brand palette.
You may also use tints and shades of these colours as needed, but avoid introducing non-brand colours.

Palette

Name	Hex	RGB
Ocean	`#1E5E82`	rgb(30, 94, 130)
Flamingo	`#D86E89`	rgb(216, 110, 137)
Deep Ocean	`#002A41`	rgb(0, 42, 65)
Sky Blue	`#81CCEA`	rgb(129, 204, 234)
Cloud	`#EEF9FD`	rgb(238, 249, 253)

Extended Palette — Brand Ramps (50 lightest → 900 darkest)

Use these tokens for tints, shades, hover states, borders, and surfaces without introducing non-brand colours. Prefer the core step (bold) for each brand colour; reach for neighbouring steps when you need contrast adjustment.

Ocean — core 500

text

 50  #E8F2F8      500  #1E5E82   ← core
100  #C5DCEA      600  #174E6E
200  #9DC3D8      700  #103D57
300  #6AA5C3      800  #0A2D40
400  #3D89AF      900  #042031

Flamingo — core 500

text

 50  #FAEEF2      500  #D86E89   ← core
100  #F4D1DA      600  #C25079
200  #EDB0BE      700  #9E3456
300  #E690A2      800  #7A1E3D
400  #DE7F92      900  #550E28

Sky — core 400 (Sky's brand anchor sits at 400, not 500)

text

 50  #F0FAFD      400  #81CCEA   ← core
100  #D9F1F9      500  #59BAE2
200  #B8E5F5      600  #329DD3
300  #95D6EF      700  #1B7EAD
                  800  #0E5F85
                  900  #064260

Neutral — greys for text, borders, dividers on light surfaces

text

 50  #F5F7F9      500  #8A99AB
100  #DDE3EA      600  #5C6A7A
200  #C5CED9      700  #3E4F5E
300  #A8B5C4      800  #293C49
400  #B2BECC      900  #161C21

Anchor Tokens (fixed, not on a ramp)

Token	Hex	Use
Deep Ocean	`#002A41`	Primary dark background
Cloud	`#EEF9FD`	Primary light / neutral background
Skywalker 950	`#001421`	Near-black dark surface
Skywalker 900	`#001E2F`	Deepest dark section
Skywalker 800	`#042D44`	Dark surface 2
Skywalker 700	`#073B58`	Dark surface 3
Skywalker 600	`#0C4F74`	Dark surface 4 (lightest dark)

Semantic Status Colours

Use these for success / warning / error / attention states. Do not substitute brand colours — overloading Flamingo for errors breaks the semantic contract users rely on.

Token	Hex	Use
Yoda 600	`#07883D`	Success / positive
BB8 600	`#E87400`	Warning
Kylo 600	`#D91544`	Error / danger
Pyre 300	`#FFD60A`	Highlight / attention

General Design Principles

Colour Hierarchy

Primary Actions/Elements: Ocean (#1E5E82)
Secondary/Supporting: Sky Blue (#81CCEA)
Emphasis/Accent: Flamingo (#D86E89)
Foundation/Authority: Deep Ocean (#002A41)
Background/Neutral: Cloud (#EEF9FD)

Light backgrounds use Cloud (#EEF9FD) or white (#FFFFFF).
Dark backgrounds use Deep Ocean (#002A41). Never use pure black (#000000).
Primary text on light backgrounds is Deep Ocean. On dark backgrounds, use white.
Accent elements (borders, icons, highlights) use Ocean, Flamingo, or Sky Blue.

Semantic Usage

Use Ocean for primary actions, main navigation, and brand-level emphasis
Use Sky Blue for interactive elements, information, and secondary actions
Use Flamingo sparingly for CTAs and brand highlights (not for errors — use Kylo)
Use Deep Ocean for text, borders, authoritative elements
Use Cloud for backgrounds, subtle dividers, inactive states
Use the semantic status colours (Yoda / BB8 / Kylo / Pyre) for success / warning / error / attention — never substitute brand colours for these
Default to light / day mode colour schemes

Consistency Rules

Avoid mixing colour schemes from other brands
Maintain consistent colour meanings across all diagrams in a project
When transparency is needed, use rgba values of the brand colours
For hover/pressed states, step one rung on the brand ramp (e.g. ocean-500 → ocean-600 on hover, flamingo-500 → flamingo-600 on press). Only fall back to percentage darken/lighten if no ramp token fits

Frontend Component Styles

Component Guidelines

Buttons

Primary:

Background: Ocean (#1E5E82)
Text: Cloud (#EEF9FD)
Hover: Deep Ocean (#002A41)
Border: none or Ocean

Secondary:

Background: Sky Blue (#81CCEA)
Text: Deep Ocean (#002A41)
Hover: Ocean (#1E5E82) with Cloud text
Border: Ocean (#1E5E82)

Accent/CTA:

Background: Flamingo 500 (#D86E89)
Text: White (#FFFFFF)
Hover: Flamingo 600 (#C25079)
Border: none

Ghost/Outline:

Background: transparent
Text: Ocean (#1E5E82)
Hover: Cloud (#EEF9FD) background
Border: Ocean (#1E5E82)

Header:

Background: Deep Ocean (#002A41)
Text: Cloud (#EEF9FD)
Active: Sky Blue (#81CCEA)
Hover: Ocean (#1E5E82) background

Sidebar:

Background: Cloud (#EEF9FD)
Text: Deep Ocean (#002A41)
Active: Ocean (#1E5E82) with Cloud text
Hover: Sky Blue (#81CCEA) background

Forms

Input Fields:

Background: White (#FFFFFF)
Border: Sky Blue (#81CCEA)
Focus Border: Ocean (#1E5E82)
Text: Deep Ocean (#002A41)
Placeholder: Sky Blue (#81CCEA)
Error Border: Kylo 600 (#D91544)

Labels:

Colour: Ocean (#1E5E82)
Required Indicator: Flamingo (#D86E89)

Cards and Surfaces

Standard Card:

Background: White (#FFFFFF)
Border: Cloud (#EEF9FD)
Shadow: rgba(0, 42, 65, 0.1)

Highlighted Card:

Background: Cloud (#EEF9FD)
Border: Sky Blue (#81CCEA)
Shadow: rgba(30, 94, 130, 0.15)

Show full SKILL.md (452 more words)Show less

Alerts and Messages

Use the semantic status colours — do not overload Flamingo for errors/warnings or Ocean for success.

Error:

Background: Kylo 600 (#D91544) at 10% opacity
Border: Kylo 600 (#D91544)
Text: Deep Ocean (#002A41)
Icon: Kylo 600 (#D91544)

Warning:

Background: BB8 600 (#E87400) at 10% opacity
Border: BB8 600 (#E87400)
Text: Deep Ocean (#002A41)
Icon: BB8 600 (#E87400)

Success:

Background: Yoda 600 (#07883D) at 10% opacity
Border: Yoda 600 (#07883D)
Text: Deep Ocean (#002A41)
Icon: Yoda 600 (#07883D)

Info:

Background: Sky Blue (#81CCEA) at 10% opacity
Border: Sky Blue (#81CCEA)
Text: Deep Ocean (#002A41)
Icon: Sky Blue (#81CCEA)

Data Visualisation (Charts)

Primary Series: Ocean (#1E5E82)
Secondary Series: Sky Blue (#81CCEA)
Tertiary Series: Deep Ocean (#002A41)
Highlight/Accent: Flamingo (#D86E89)
Background: Cloud (#EEF9FD)
Grid Lines: Sky Blue (#81CCEA) at 20% opacity
Text: Deep Ocean (#002A41)

CSS Variables

css

:root {
   /* Core brand (anchor steps) */
   --brand-ocean: #1E5E82;        /* ocean-500 */
   --brand-flamingo: #D86E89;     /* flamingo-500 */
   --brand-sky-blue: #81CCEA;     /* sky-400 */
   --brand-deep-ocean: #002A41;
   --brand-cloud: #EEF9FD;

   /* Ocean ramp */
   --ocean-50:  #E8F2F8; --ocean-100: #C5DCEA; --ocean-200: #9DC3D8;
   --ocean-300: #6AA5C3; --ocean-400: #3D89AF; --ocean-500: #1E5E82;
   --ocean-600: #174E6E; --ocean-700: #103D57; --ocean-800: #0A2D40;
   --ocean-900: #042031;

   /* Flamingo ramp */
   --flamingo-50:  #FAEEF2; --flamingo-100: #F4D1DA; --flamingo-200: #EDB0BE;
   --flamingo-300: #E690A2; --flamingo-400: #DE7F92; --flamingo-500: #D86E89;
   --flamingo-600: #C25079; --flamingo-700: #9E3456; --flamingo-800: #7A1E3D;
   --flamingo-900: #550E28;

   /* Sky ramp */
   --sky-50:  #F0FAFD; --sky-100: #D9F1F9; --sky-200: #B8E5F5;
   --sky-300: #95D6EF; --sky-400: #81CCEA; --sky-500: #59BAE2;
   --sky-600: #329DD3; --sky-700: #1B7EAD; --sky-800: #0E5F85;
   --sky-900: #064260;

   /* Neutral greys */
   --neutral-50:  #F5F7F9; --neutral-100: #DDE3EA; --neutral-200: #C5CED9;
   --neutral-300: #A8B5C4; --neutral-400: #B2BECC; --neutral-500: #8A99AB;
   --neutral-600: #5C6A7A; --neutral-700: #3E4F5E; --neutral-800: #293C49;
   --neutral-900: #161C21;

   /* Dark surfaces */
   --skywalker-950: #001421; --skywalker-900: #001E2F; --skywalker-800: #042D44;
   --skywalker-700: #073B58; --skywalker-600: #0C4F74;

   /* Semantic status */
   --yoda-600: #07883D;  /* success */
   --bb8-600:  #E87400;  /* warning */
   --kylo-600: #D91544;  /* error */
   --pyre-300: #FFD60A;  /* highlight */

   /* Semantic mappings */
   --colour-primary: var(--brand-ocean);
   --colour-primary-dark: var(--brand-deep-ocean);
   --colour-secondary: var(--brand-sky-blue);
   --colour-accent: var(--brand-flamingo);
   --colour-background: var(--brand-cloud);
   --colour-surface: #FFFFFF;

   /* Text */
   --text-primary: var(--brand-deep-ocean);
   --text-secondary: var(--brand-ocean);
   --text-on-primary: var(--brand-cloud);
   --text-on-accent: #FFFFFF;

   /* State (semantic status — do not substitute brand colours) */
   --colour-error: var(--kylo-600);
   --colour-warning: var(--bb8-600);
   --colour-success: var(--yoda-600);
   --colour-info: var(--brand-sky-blue);
   --colour-highlight: var(--pyre-300);

   /* Shadows and overlays */
   --shadow-colour: rgba(0, 42, 65, 0.1);
   --overlay-light: rgba(238, 249, 253, 0.9);
   --overlay-dark: rgba(0, 42, 65, 0.8);
}

Tailwind Configuration

Tailwind's config key is colors (American spelling) — this is required by the framework regardless of project-wide spelling conventions.

module.exports = {
   theme: {
      extend: {
         colors: {
            brand: {
               ocean: '#1E5E82',
               flamingo: '#D86E89',
               'sky-blue': '#81CCEA',
               'deep-ocean': '#002A41',
               cloud: '#EEF9FD',
            },
            ocean: {
               50: '#E8F2F8', 100: '#C5DCEA', 200: '#9DC3D8',
               300: '#6AA5C3', 400: '#3D89AF', 500: '#1E5E82',
               600: '#174E6E', 700: '#103D57', 800: '#0A2D40',
               900: '#042031',
            },
            flamingo: {
               50: '#FAEEF2', 100: '#F4D1DA', 200: '#EDB0BE',
               300: '#E690A2', 400: '#DE7F92', 500: '#D86E89',
               600: '#C25079', 700: '#9E3456', 800: '#7A1E3D',
               900: '#550E28',
            },
            sky: {
               50: '#F0FAFD', 100: '#D9F1F9', 200: '#B8E5F5',
               300: '#95D6EF', 400: '#81CCEA', 500: '#59BAE2',
               600: '#329DD3', 700: '#1B7EAD', 800: '#0E5F85',
               900: '#064260',
            },
            neutral: {
               50: '#F5F7F9', 100: '#DDE3EA', 200: '#C5CED9',
               300: '#A8B5C4', 400: '#B2BECC', 500: '#8A99AB',
               600: '#5C6A7A', 700: '#3E4F5E', 800: '#293C49',
               900: '#161C21',
            },
            skywalker: {
               600: '#0C4F74', 700: '#073B58', 800: '#042D44',
               900: '#001E2F', 950: '#001421',
            },
            // Semantic status (single-step anchors)
            yoda: '#07883D',   // success
            bb8:  '#E87400',   // warning
            kylo: '#D91544',   // error
            pyre: '#FFD60A',   // highlight
         }
      }
   }
}

Fonts & Typography

Where applicable, the 'Inter' typeface is used for headlines, subheadings, and body copy.
Favour bundling the font for offline use over relying on CDNs.

Role	Font	Weight	CSS
Headlines	Inter	SemiBold	`font-weight: 600`
Subheadings	Inter	Medium	`font-weight: 500`
Body copy	Inter	Regular	`font-weight: 400`

Inter CDN Fallback

If bundling is not possible, use this CDN:

html

<!-- HTML in your document's head -->
<link rel="preconnect" href="https://rsms.me/">
<link rel="stylesheet" href="https://rsms.me/inter/inter.css">

css

:root {
  font-family: Inter, sans-serif;
  font-feature-settings: 'liga' 1, 'calt' 1; /* fix for Chrome */
}
@supports (font-variation-settings: normal) {
  :root { font-family: InterVariable, sans-serif; }
}

Logo System

Logo Variants

The skill bundles all logo files in assets/. Selection guide:

File	Use when…
`Mantel_Logo__Positive.svg`	Full-colour logo on light backgrounds
`Mantel_Logo__Negative.svg`	Full-colour logo on dark backgrounds
`Mantel_Logo__Navy.svg`	Mono (Deep Ocean) logo on light backgrounds
`Mantel_Logo__White.svg`	Mono (white) logo on dark backgrounds
`Mantel_Icon__Positive.svg`	Full-colour icon only, on light backgrounds
`Mantel_Icon__Negative.svg`	Full-colour icon only, on dark backgrounds
`Mantel_Icon__Navy.svg`	Mono (Deep Ocean) icon, on light backgrounds
`Mantel_Icon__White.svg`	Mono (white) icon, on dark backgrounds

Logo Rules (critical — violations are immediately visible)

Never stretch or distort. Logo aspect ratio is approximately 4.67:1. Icon is approximately 1.5:1. Always preserve proportions.
Never change logo colours. Use only the provided variants — never recolour the icon or wordmark.
Never crop the logo. All elements must be fully visible.
Minimum clear space around the logo equals the height and width of the icon portion.
Minimum sizes: Logo 80px / 21mm wide. Icon 44px / 12mm wide.
Light logo on light background = wrong. Dark logo on dark background = wrong. Always use the variant that contrasts with the background.
Preferred for client-facing materials: Use the full-colour Negative logo on Deep Ocean backgrounds. This is the most common and branded combination.
Never add a coloured border around the logo — the brand guide explicitly prohibits this.

Resources

If you are creating diagrams you MUST also read in ./resources/diagrams.md

This information should help you maintain visual consistency with the Mantel brand across diagrams and frontend components.

Files

SKILL.md and 9 other files (assets) in Skills/apply-mantel-styles of sammcj/agentic-coding.

SKILL.md
assets/Mantel_Icon__Navy.svg
assets/Mantel_Icon__Negative.svg
assets/Mantel_Icon__Positive.svg
assets/Mantel_Icon__White.svg
assets/Mantel_Logo__Navy.svg
assets/Mantel_Logo__Negative.svg
assets/Mantel_Logo__Positive.svg
assets/Mantel_Logo__White.svg
resources/diagrams.md

Open the folder on GitHubat commit 2f25ced

Compare with similar skills

Apply Mantel Styles next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Apply Mantel Styles compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Apply Mantel Styles this skillsammcj/agentic-coding	162	—	~3.6k	Automated safety check: Pass	Apache-2.0	2 days ago
Media Asset SourcingBingHanOfUESTC/open_agent_team	106	—	~819	Automated safety check: Pass	MIT	3 mo ago
Sf Diagram NanobananaproJaganpro/sf-skills	424	—	~1.6k	Automated safety check: Pass	MIT	5 mo ago
Generate ImageK-Dense-AI/claude-scientific-writer	2.4k	1 repos	~3.8k	Automated safety check: Notes	MIT	2 days ago
Paper IllustrationAI4Scientist/nano-scientist	128	4 repos	~7.2k	Automated safety check: Notes	None	4 mo ago
Brand and Design Toolkitnextlevelbuilder/ui-ux-pro-max-skill	135k	1 repos	~3.5k	Automated safety check: Pass	MIT	today

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Questions about Apply Mantel Styles

What does Apply Mantel Styles do?

Provides guidelines for applying Mantel's brand styles to diagrams and frontend components. Apply Mantel Styles is an agent skill from sammcj/agentic-coding. Provides guidelines for applying Mantel's brand styles to diagrams and frontend components.

When should I use Apply Mantel Styles?

Apply Mantel Styles fits situations like: asked to create visuals that need to align with Mantels branding; tasks that involve Logo and visual identity; tasks that involve Diagrams.

How do I install Apply Mantel Styles in Claude Code?

Run `npx skills add sammcj/agentic-coding --skill apply-mantel-styles -a claude-code`. Or copy the skill folder (Skills/apply-mantel-styles in sammcj/agentic-coding) into .claude/skills/apply-mantel-styles in your project. Claude Code loads it when a task matches its description.

How do I install Apply Mantel Styles in Codex?

Run `npx skills add sammcj/agentic-coding --skill apply-mantel-styles -a codex`. Or copy the skill folder (Skills/apply-mantel-styles in sammcj/agentic-coding) into .agents/skills/apply-mantel-styles in your project. Codex loads it when a task matches its description.

Can I use Apply Mantel Styles in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add sammcj/agentic-coding --skill apply-mantel-styles -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/apply-mantel-styles, .gemini/skills/apply-mantel-styles, .github/skills/apply-mantel-styles and .opencode/skills/apply-mantel-styles in your project.

What does Apply Mantel Styles need to run?

SKILL.md names no scripts, command-line tools or credentials: Apply Mantel Styles is instructions for the agent only.

Does Apply Mantel Styles access the network?

SKILL.md names 1 domain. In commands or code: rsms.me; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.

Is Apply Mantel Styles safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Apply Mantel Styles use?

Apply Mantel Styles is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Apply Mantel Styles use?

About 3.6k tokens (SKILL.md is roughly 15k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Apply Mantel Styles?

Skills that share tags, products or a category with Apply Mantel Styles: Media Asset Sourcing (BingHanOfUESTC/open_agent_team, 106 stars), Sf Diagram Nanobananapro (Jaganpro/sf-skills, 424 stars), Generate Image (K-Dense-AI/claude-scientific-writer, 2.4k stars) and Paper Illustration (AI4Scientist/nano-scientist, 128 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Apply Mantel Styles?

sammcj (a GitHub user) maintains it in sammcj/agentic-coding, which has 162 GitHub stars. The repository holds 64 skills in this directory. The repository was last updated on October 9, 2026.

Source: sammcj/agentic-coding on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Apply Mantel Styles

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Rules For Applying Mantel Brand Styles

Colour Scheme

Palette

Extended Palette — Brand Ramps (50 lightest → 900 darkest)

Anchor Tokens (fixed, not on a ramp)

Semantic Status Colours

General Design Principles

Colour Hierarchy

Semantic Usage

Consistency Rules

Frontend Component Styles

Component Guidelines

Buttons

Navigation

Forms

Cards and Surfaces

Alerts and Messages

Data Visualisation (Charts)

CSS Variables

Tailwind Configuration

Fonts & Typography

Inter CDN Fallback

Logo System

Logo Variants

Logo Rules (critical — violations are immediately visible)

Resources

Files

Compare with similar skills

Similar skills

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Related

Questions about Apply Mantel Styles