Agent skill

Custom Theme

by xuzhougeng in xuzhougeng/wisp-science

Author a Wisp custom theme CSS file that uses documented tokens and import constraints.

AGPL-3.0Auto-check passedFrontend & Design

Install Custom Theme

skills CLI
$ npx skills add xuzhougeng/wisp-science --skill custom-theme -a claude-code

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

GitHub CLI
$ gh skill install xuzhougeng/wisp-science custom-theme --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/xuzhougeng/wisp-science.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/custom-theme .claude/skills/custom-theme && 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/

Facts

Skill name
custom-theme
GitHub stars
1k
Token cost
~878 tokens
SKILL.md length
350 words
Files
1
Skills in repo
25
Repo updated
First seen
Licence
AGPL-3.0

At a glance

Author a Wisp custom theme CSS file that uses documented tokens and import constraints.

  • Works in 4 steps: Ask what should change (lead bar, table… → Write a .css file in the project,… → Apply it → …
  • The user wants a custom look
  • SKILL.md covers Workflow, Constraints, Tokens and Common requests, plus 1 more section
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Custom Theme is an agent skill from xuzhougeng/wisp-science. Author a Wisp custom theme CSS file that uses documented tokens and import constraints. Use when the user wants a custom look, hide the paragraph lead bar, restyle chat Markdown, override colors, or import a stylesheet under Settings → Appearance.

Its SKILL.md is about 880 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Frontend & Design, covering CSS and styling. The repository describes itself as: Open-source, local-first desktop AI research workbench for scientific computing with Python/R, MCP bioinformatics tools, SSH/WSL/GPU runtimes, and OpenAI/Anthropic models. The licence is AGPL-3.0.

When your agent uses it

  • The user wants a custom look
  • Hide the paragraph lead bar
  • Restyle chat Markdown
  • Override colors

Example prompts

  • “/custom-theme”

Workflow steps

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

  1. Ask what should change (lead bar, table size, accent, chat density, fonts).
  2. Write a .css file in the project, usually theme.css.
  3. Apply it
  4. Confirm the change is visible. If a rule did nothing, the selector is wrong;

What it can do on your machine

Read from SKILL.md and the folder at commit 5eb95c9. 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 and json).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    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

Custom Theme loads about 878 tokens when it runs. Until then it costs about 65 tokens; SKILL.md has 350 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~65
When it runs · the whole SKILL.md, loaded when a task matches
~878

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 xuzhougeng/wisp-science at commit 5eb95c9, republished under its AGPL-3.0 licence (© xuzhougeng). 350 words, ~878 tokens.

Download SKILL.mdSave it as .claude/skills/custom-theme/SKILL.md (or your agent's skills folder).
name
custom-theme
description
Author a Wisp custom theme CSS file that uses documented tokens and import constraints. Use when the user wants a custom look, hide the paragraph lead bar, restyle chat Markdown, override colors, or import a stylesheet under Settings → Appearance.

Custom Wisp theme CSS

Wisp injects one user stylesheet after the built-in theme. Prefer CSS variables on :root. Do not invent Settings toggles for one-off look changes.

Workflow

  1. Ask what should change (lead bar, table size, accent, chat density, fonts).
  2. Write a .css file in the project, usually theme.css.
  3. Apply it:
    • Desktop: configure with action=set and values.custom_css set to the full stylesheet text. Empty string clears it.
    • Or tell the user to import the file under Settings → Appearance.
  4. Confirm the change is visible. If a rule did nothing, the selector is wrong; do not add !important unless a built-in rule requires it.

Constraints

The host sanitizes CSS before inject. These are stripped:

  • @import and @namespace
  • every url(...)
  • javascript:, expression(, behavior:, -moz-binding
  • </style and <script
  • NULs; payload longer than 64 KB is truncated

Do not rely on remote fonts, images, or other stylesheets. Name an installed font with configure ui_font_family / code_font_family instead.

Scope light/dark overrides with :root[data-theme="light"] and :root[data-theme="dark"]. System theme follows the OS, so also cover :root[data-theme="system"] when the user cares about both.

Show full SKILL.md (173 more words)Show less

Tokens

Override these on :root. Leave unused tokens alone.

TokenDefault role
--bg-app, --bg-elev, --bg-sunken, --bg-input, --bg-panelSurfaces
--text, --text-muted, --text-faintInk
--border, --border-strongHairlines
--clay, --clay-strong, --clay-soft, --on-clayAccent (teal)
--ui-font-size, --code-font-sizeSet by Appearance sliders; do not hard-code px on chat body
--md-table-font-sizeMarkdown tables; default calc(var(--ui-font-size, 14px) - 1px)
--md-lead-bar-width, --md-lead-bar-padBold-at-start emphasis bar; 3px / 0.55em
--font-user-ui, --font-user-monoOptional family names; empty restores the stack
--radius, --radius-sm, --radius-xsCorners

Palette attributes (data-light-palette, data-dark-palette) already map onto the semantic tokens. Prefer --clay / --bg-app over palette internals (--lp-*, --dp-*) unless the user asked to restyle one palette only.

Common requests

Hide the lead bar (the vertical mark before a paragraph that starts with bold):

css
:root {
  --md-lead-bar-width: 0;
  --md-lead-bar-pad: 0;
}

Keep tables aligned with UI size, or pin a size:

css
:root { --md-table-font-size: calc(var(--ui-font-size, 14px) - 1px); }
css
:root { --md-table-font-size: 14px; }

Quiet chat chrome:

css
.msg.assistant .role { display: none; }
.msg.assistant .body.md { letter-spacing: 0; }

Do not restyle window controls, settings forms, or tool-approval cards unless the user asked. Keep contrast readable on both themes.

Apply via configure

json
{
  "action": "set",
  "values": {
    "custom_css": ":root { --md-lead-bar-width: 0; --md-lead-bar-pad: 0; }\n"
  }
}

After writing theme.css, read it and pass the exact file contents. Do not summarize or wrap the CSS in Markdown fences inside custom_css.

© xuzhougeng, AGPL-3.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in skills/custom-theme of xuzhougeng/wisp-science.

Open the folder on GitHubat commit 5eb95c9

Compare with similar skills

Custom Theme 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.

Custom Theme compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Custom Theme this skillxuzhougeng/wisp-science1k—~878Automated safety check: PassAGPL-3.0
Tailwindcss Developmentanonaddy/anonaddy4.9k10 repos~865Automated safety check: PassMIT
UI StylingOhh-889/skyroc79513 repos~2.5kAutomated safety check: PassMIT
MCP Developmentcoollabsio/coolify63k1 repos~949Automated safety check: PassMIT
Web Animation DesignbaptisteArno/typebot.io11k2 repos~2.7kAutomated safety check: PassCustom licence
UI UX Pro Maxsaoudi-h/solar-icons18618 repos~11kAutomated safety check: NotesCustom licence

Similar skills

  • Tailwindcss Development

    anonaddy/anonaddy

    Always invoke when the user's message includes 'tailwind' in any form.

    4.9k GitHub starsUsed in 10 repos~865 tokens
    Frontend & DesignAuto-check passed
  • UI Styling

    Ohh-889/skyroc

    Create beautiful, accessible user interfaces with shadcn/ui components (built on Radix UI + Tailwind), Tailwind CSS utility-first styling, and canvas-based visual designs.

    795 GitHub starsUsed in 13 repos~2.5k tokens
    Frontend & DesignAuto-check passed
  • MCP Development

    coollabsio/coolify

    A skill your agent uses for Laravel MCP development. An agent skill from coollabsio/coolify.

    63k GitHub starsUsed in 1 repo~949 tokens
    Frontend & DesignAuto-check passed
  • Web Animation Design

    baptisteArno/typebot.io

    Guides easing, timing and animation choices for UI motion, based on a web animation course, and reviews existing animations in a before-and-after table.

    11k GitHub starsUsed in 2 repos~2.7k tokens
    Frontend & DesignAuto-check passed
  • UI UX Pro Max

    saoudi-h/solar-icons

    UI/UX design intelligence for web and mobile. An agent skill from saoudi-h/solar-icons.

    186 GitHub starsUsed in 18 repos~11k tokens
    Frontend & DesignAuto-check: notes
  • Ink Tui Wizard

    novuhq/novu

    Build terminal user interfaces (TUIs) using Ink (React for CLIs) and @inkjs/ui with a reactive, session-driven wizard pattern.

    40k GitHub stars~1.9k tokensUpdated today
    Frontend & DesignAuto-check passed

More from xuzhougeng/wisp-science

All 25 skills in this repo
  • Singlecell Qc

    xuzhougeng/wisp-science

    A skill your agent uses when designing, reviewing, or implementing single-cell RNA-seq QC in Python or R with a human-in-the-loop, data-driven approach.

    1k GitHub stars~1.6k tokensUpdated today
    Auto-check passed
  • Research Integrity Audit

    xuzhougeng/wisp-science

    学术审查 / research-integrity screening of a manuscript's figures and reported numbers.

    1k GitHub stars~2.6k tokensUpdated today
    Auto-check passed
  • Distill Concept Books

    xuzhougeng/wisp-science

    将概念、理论或分析方法类图书蒸馏为证据可追溯、经人工门禁审核且不暴露书名、作者、出版社等来源身份的任务型 Skill 候选。用于新建或恢复图书蒸馏、以本地 Tesseract 扫描 DOCX 全部内嵌图像或 Poppler 渲染的扫描 PDF 全页、建立 source map 与 evidence/claim/relation/capability…

    1k GitHub stars~2.3k tokensUpdated today
    Auto-check passed
  • Skill Creator

    xuzhougeng/wisp-science

    Create, update, validate, and evaluate Wisp skills. An agent skill from xuzhougeng/wisp-science.

    1k GitHub stars~1.3k tokensUpdated today
    Auto-check passed
  • Word Zotero Citations

    xuzhougeng/wisp-science

    Build, audit, authorize, recover, or finalize dynamic Zotero citations and bibliographies in Microsoft Word DOCX files with a protected-source, digest-bound workflow.

    1k GitHub stars~3.7k tokensUpdated today
    Auto-check passed
  • Compute Env Setup

    xuzhougeng/wisp-science

    Set up and validate a reproducible Python or R environment on a Wisp execution context.

    1k GitHub stars~1.1k tokensUpdated today
    Auto-check passed

Questions about Custom Theme

What does Custom Theme do?

Author a Wisp custom theme CSS file that uses documented tokens and import constraints. Custom Theme is an agent skill from xuzhougeng/wisp-science. Author a Wisp custom theme CSS file that uses documented tokens and import constraints.

When should I use Custom Theme?

Custom Theme fits situations like: the user wants a custom look; hide the paragraph lead bar; restyle chat Markdown; override colors.

How do I install Custom Theme in Claude Code?

Run `npx skills add xuzhougeng/wisp-science --skill custom-theme -a claude-code`. Or copy the skill folder (skills/custom-theme in xuzhougeng/wisp-science) into .claude/skills/custom-theme in your project. Claude Code loads it when a task matches its description.

How do I install Custom Theme in Codex?

Run `npx skills add xuzhougeng/wisp-science --skill custom-theme -a codex`. Or copy the skill folder (skills/custom-theme in xuzhougeng/wisp-science) into .agents/skills/custom-theme in your project. Codex loads it when a task matches its description.

Can I use Custom Theme 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 xuzhougeng/wisp-science --skill custom-theme -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/custom-theme, .gemini/skills/custom-theme, .github/skills/custom-theme and .opencode/skills/custom-theme in your project.

What does Custom Theme need to run?

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

Does Custom Theme access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Custom Theme 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 Custom Theme use?

Custom Theme is published under the AGPL-3.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Custom Theme use?

About 878 tokens (SKILL.md is roughly 3.5k 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 Custom Theme?

Skills that share tags, products or a category with Custom Theme: Tailwindcss Development (anonaddy/anonaddy, 4.9k stars), UI Styling (Ohh-889/skyroc, 795 stars), MCP Development (coollabsio/coolify, 63k stars) and Web Animation Design (baptisteArno/typebot.io, 11k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Custom Theme?

xuzhougeng (a GitHub user) maintains it in xuzhougeng/wisp-science, which has 1,022 GitHub stars. The repository holds 25 skills in this directory. The repository was last updated on October 9, 2026.

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