Agent skill

Flutter Theming Apps

Customizes the visual appearance of a Flutter app using the theming system.

BSD-3-ClauseAuto-check passedFrontend & Design

Install Flutter Theming Apps

skills CLI

$ npx skills add btwld/superdeck --skill flutter-theming-apps -a claude-code

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

GitHub CLI

$ gh skill install btwld/superdeck flutter-theming-apps --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/btwld/superdeck.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/flutter-theming-apps .claude/skills/flutter-theming-apps && 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 "flutter-theming-apps" agent skill from https://github.com/btwld/superdeck/tree/main/.agents/skills/flutter-theming-apps into .claude/skills/flutter-theming-apps/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "flutter-theming-apps", 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/btwld/superdeck/tree/main/.agents/skills/flutter-theming-apps

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 btwld/superdeck --skill flutter-theming-apps -a codex

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

GitHub CLI

$ gh skill install btwld/superdeck flutter-theming-apps --agent codex

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

Manual copy

$ git clone --depth 1 https://github.com/btwld/superdeck.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/flutter-theming-apps .agents/skills/flutter-theming-apps && 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 "flutter-theming-apps" agent skill from https://github.com/btwld/superdeck/tree/main/.agents/skills/flutter-theming-apps into .agents/skills/flutter-theming-apps/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "flutter-theming-apps", 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 btwld/superdeck --skill flutter-theming-apps -a cursor

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

GitHub CLI

$ gh skill install btwld/superdeck flutter-theming-apps --agent cursor

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

Manual copy

$ git clone --depth 1 https://github.com/btwld/superdeck.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/flutter-theming-apps .cursor/skills/flutter-theming-apps && 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 "flutter-theming-apps" agent skill from https://github.com/btwld/superdeck/tree/main/.agents/skills/flutter-theming-apps into .cursor/skills/flutter-theming-apps/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "flutter-theming-apps", 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/btwld/superdeck.git --path .agents/skills/flutter-theming-apps

--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 btwld/superdeck --skill flutter-theming-apps -a gemini-cli

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

GitHub CLI

$ gh skill install btwld/superdeck flutter-theming-apps --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/btwld/superdeck.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/flutter-theming-apps .gemini/skills/flutter-theming-apps && 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 "flutter-theming-apps" agent skill from https://github.com/btwld/superdeck/tree/main/.agents/skills/flutter-theming-apps into .gemini/skills/flutter-theming-apps/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "flutter-theming-apps", 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 btwld/superdeck flutter-theming-apps

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 btwld/superdeck --skill flutter-theming-apps -a github-copilot

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

Manual copy

$ git clone --depth 1 https://github.com/btwld/superdeck.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/flutter-theming-apps .github/skills/flutter-theming-apps && 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 "flutter-theming-apps" agent skill from https://github.com/btwld/superdeck/tree/main/.agents/skills/flutter-theming-apps into .github/skills/flutter-theming-apps/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "flutter-theming-apps", 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 btwld/superdeck --skill flutter-theming-apps -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 btwld/superdeck flutter-theming-apps --agent opencode

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

Manual copy

$ git clone --depth 1 https://github.com/btwld/superdeck.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/flutter-theming-apps .opencode/skills/flutter-theming-apps && 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 "flutter-theming-apps" agent skill from https://github.com/btwld/superdeck/tree/main/.agents/skills/flutter-theming-apps into .opencode/skills/flutter-theming-apps/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "flutter-theming-apps", 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: flutter-theming-apps
GitHub stars: 130
Token cost: ~1.9k tokens
SKILL.md length: 606 words
Files: 1
Skills in repo: 23
Repo updated: Sep 28, 2026
First seen: Oct 7, 2026
Licence: BSD-3-Clause

At a glance

Customizes the visual appearance of a Flutter app using the theming system.

Defining global styles
SKILL.md covers Contents, Core Theming Concepts, Material 3 Guidelines and Component Theme Normalization, plus 4 more sections
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
Typography for an application

What it does

Flutter Theming Apps is an agent skill from btwld/superdeck. Customizes the visual appearance of a Flutter app using the theming system. Use when defining global styles, colors, or typography for an application.

Its SKILL.md is about 1.9k 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 Theming and dark mode, Cross-platform mobile apps and Typography. It works with Flutter. The repository describes itself as: Presentation slides for Flutter with Flutter. The licence is BSD-3-Clause.

When your agent uses it

Defining global styles
Typography for an application

Example prompts

“Use the flutter-theming-apps skill to customiz the visual appearance of a Flutter app using the theming system”
“/flutter-theming-apps”

What it can do on your machine

Read from SKILL.md and the folder at commit 815a746. 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 dart).
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

Flutter Theming Apps loads about 1.9k tokens when it runs. Until then it costs about 43 tokens; SKILL.md has 606 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~43
When it runs · the whole SKILL.md, loaded when a task matches: ~1.9k

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 btwld/superdeck at commit 815a746, republished under its BSD-3-Clause licence (© btwld). 606 words, ~1,898 tokens.

Download SKILL.mdSave it as .claude/skills/flutter-theming-apps/SKILL.md (or your agent's skills folder).

name: flutter-theming-apps
description: Customizes the visual appearance of a Flutter app using the theming system. Use when defining global styles, colors, or typography for an application.
metadata.model: models/gemini-3.1-pro-preview
metadata.last_modified: Thu, 12 Mar 2026 22:14:47 GMT

Implementing Flutter Theming and Adaptive Design

Core Theming Concepts
Material 3 Guidelines
Component Theme Normalization
Button Styling
Platform Idioms & Adaptive Design
Workflows
Examples

Core Theming Concepts

Flutter applies styling in a strict hierarchy: styles applied to the specific widget -> themes that override the immediate parent theme -> the main app theme.

Define app-wide themes using the theme property of MaterialApp with a ThemeData instance.
Override themes for specific widget subtrees by wrapping them in a Theme widget and using Theme.of(context).copyWith(...).
Do not use deprecated ThemeData properties:
- Replace accentColor with colorScheme.secondary.
- Replace accentTextTheme with textTheme (using colorScheme.onSecondary for contrast).
- Replace AppBarTheme.color with AppBarTheme.backgroundColor.

Material 3 Guidelines

Material 3 is the default theme as of Flutter 3.16.

Colors: Generate color schemes using ColorScheme.fromSeed(seedColor: Colors.blue). This ensures accessible contrast ratios.
Elevation: Material 3 uses ColorScheme.surfaceTint to indicate elevation instead of just drop shadows. To revert to M2 shadow behavior, set surfaceTint: Colors.transparent and define a shadowColor.
Typography: Material 3 updates font sizes, weights, and line heights. If text wrapping breaks legacy layouts, adjust letterSpacing on the specific TextStyle.
Modern Components:
- Replace BottomNavigationBar with NavigationBar.
- Replace Drawer with NavigationDrawer.
- Replace ToggleButtons with SegmentedButton.
- Use FilledButton for a high-emphasis button without the elevation of ElevatedButton.

Component Theme Normalization

Component themes in ThemeData have been normalized to use *ThemeData classes rather than *Theme widgets.

When defining ThemeData, strictly use the *ThemeData suffix for the following properties:

cardTheme: Use CardThemeData (Not CardTheme)
dialogTheme: Use DialogThemeData (Not DialogTheme)
tabBarTheme: Use TabBarThemeData (Not TabBarTheme)
appBarTheme: Use AppBarThemeData (Not AppBarTheme)
bottomAppBarTheme: Use BottomAppBarThemeData (Not BottomAppBarTheme)
inputDecorationTheme: Use InputDecorationThemeData (Not InputDecorationTheme)

Button Styling

Legacy button classes (FlatButton, RaisedButton, OutlineButton) are obsolete.

Use TextButton, ElevatedButton, and OutlinedButton.
Configure button appearance using a ButtonStyle object.
For simple overrides based on the theme's color scheme, use the static utility method: TextButton.styleFrom(foregroundColor: Colors.blue).
For state-dependent styling (hovered, focused, pressed, disabled), use MaterialStateProperty.resolveWith.

Platform Idioms & Adaptive Design

When building adaptive apps, respect platform-specific norms to reduce cognitive load and build user trust.

Scrollbars: Desktop users expect omnipresent scrollbars; mobile users expect them only during scrolling. Toggle thumbVisibility on the Scrollbar widget based on the platform.
Selectable Text: Web and desktop users expect text to be selectable. Wrap text in SelectableText or SelectableText.rich.
Horizontal Button Order: Windows places confirmation buttons on the left; macOS/Linux place them on the right. Use a Row with TextDirection.rtl for Windows and TextDirection.ltr for others.
Context Menus & Tooltips: Desktop users expect hover and right-click interactions. Implement Tooltip for hover states and use context menu packages for right-click actions.

Show full SKILL.md (190 more words)Show less

Workflows

Workflow: Migrating Legacy Themes to Material 3

Use this workflow when updating an older Flutter codebase.

Task Progress:

1. Remove useMaterial3: false from ThemeData (it is true by default).
2. Replace manual ColorScheme definitions with ColorScheme.fromSeed().
3. Run validator -> review errors -> fix: Search for and replace deprecated accentColor, accentColorBrightness, accentIconTheme, and accentTextTheme.
4. Run validator -> review errors -> fix: Search for AppBarTheme(color: ...) and replace with backgroundColor.
5. Update ThemeData component properties to use *ThemeData classes (e.g., cardTheme: CardThemeData()).
6. Replace legacy buttons (FlatButton -> TextButton, RaisedButton -> ElevatedButton, OutlineButton -> OutlinedButton).
7. Replace legacy navigation components (BottomNavigationBar -> NavigationBar, Drawer -> NavigationDrawer).

Workflow: Implementing Adaptive UI Components

Use this workflow when building a widget intended for both mobile and desktop/web.

Task Progress:

1. If displaying a list/grid, wrap it in a Scrollbar and set thumbVisibility: DeviceType.isDesktop.
2. If displaying read-only data, use SelectableText instead of Text.
3. If implementing a dialog with action buttons, check the platform. If Windows, set TextDirection.rtl on the button Row.
4. If implementing interactive elements, wrap them in Tooltip widgets to support mouse hover states.

Examples

Example: Modern Material 3 ThemeData Setup

dart

MaterialApp(
  title: 'Adaptive App',
  theme: ThemeData(
    colorScheme: ColorScheme.fromSeed(
      seedColor: Colors.deepPurple,
      brightness: Brightness.light,
    ),
    // Use *ThemeData classes for component normalization
    appBarTheme: const AppBarThemeData(
      backgroundColor: Colors.deepPurple, // Do not use 'color'
      elevation: 0,
    ),
    cardTheme: const CardThemeData(
      elevation: 2,
    ),
    textTheme: const TextTheme(
      bodyMedium: TextStyle(letterSpacing: 0.2),
    ),
  ),
  home: const MyHomePage(),
);

Example: State-Dependent ButtonStyle

dart

TextButton(
  style: ButtonStyle(
    // Default color
    foregroundColor: MaterialStateProperty.all<Color>(Colors.blue),
    // State-dependent overlay color
    overlayColor: MaterialStateProperty.resolveWith<Color?>(
      (Set<MaterialState> states) {
        if (states.contains(MaterialState.hovered)) {
          return Colors.blue.withOpacity(0.04);
        }
        if (states.contains(MaterialState.focused) || states.contains(MaterialState.pressed)) {
          return Colors.blue.withOpacity(0.12);
        }
        return null; // Defer to the widget's default.
      },
    ),
  ),
  onPressed: () {},
  child: const Text('Adaptive Button'),
)

Example: Adaptive Dialog Button Order

dart

Row(
  // Windows expects confirmation on the left (RTL reverses the standard LTR Row)
  textDirection: Platform.isWindows ? TextDirection.rtl : TextDirection.ltr,
  mainAxisAlignment: MainAxisAlignment.end,
  children: [
    TextButton(
      onPressed: () => Navigator.pop(context, false),
      child: const Text('Cancel'),
    ),
    FilledButton(
      onPressed: () => Navigator.pop(context, true),
      child: const Text('Confirm'),
    ),
  ],
)

Files

Just SKILL.md in .agents/skills/flutter-theming-apps of btwld/superdeck.

Open the folder on GitHubat commit 815a746

Compare with similar skills

Flutter Theming Apps 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.

Flutter Theming Apps compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Flutter Theming Apps this skillbtwld/superdeck	130	—	~1.9k	Automated safety check: Pass	BSD-3-Clause	10 days ago
Design SystemWrongStack/WrongStack	370	—	~3.9k	Automated safety check: Pass	MIT	today
UI UX Pro Maxsaoudi-h/solar-icons	184	18 repos	~11k	Automated safety check: Notes	Custom licence	today
UI UX Pro MaxOhh-889/skyroc	795	27 repos	~3.6k	Automated safety check: Notes	MIT	1 mo ago
UI UX Pro Maxshobcoder/shob	577	—	~3.7k	Automated safety check: Pass	MIT	20 days ago
UI UX Pro Maxmajiayu000/spellbook	286	—	~442	Automated safety check: Pass	MIT	today

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Questions about Flutter Theming Apps

What does Flutter Theming Apps do?

Customizes the visual appearance of a Flutter app using the theming system. Flutter Theming Apps is an agent skill from btwld/superdeck. Customizes the visual appearance of a Flutter app using the theming system.

When should I use Flutter Theming Apps?

Flutter Theming Apps fits situations like: defining global styles; typography for an application.

How do I install Flutter Theming Apps in Claude Code?

Run `npx skills add btwld/superdeck --skill flutter-theming-apps -a claude-code`. Or copy the skill folder (.agents/skills/flutter-theming-apps in btwld/superdeck) into .claude/skills/flutter-theming-apps in your project. Claude Code loads it when a task matches its description.

How do I install Flutter Theming Apps in Codex?

Run `npx skills add btwld/superdeck --skill flutter-theming-apps -a codex`. Or copy the skill folder (.agents/skills/flutter-theming-apps in btwld/superdeck) into .agents/skills/flutter-theming-apps in your project. Codex loads it when a task matches its description.

Can I use Flutter Theming Apps 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 btwld/superdeck --skill flutter-theming-apps -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/flutter-theming-apps, .gemini/skills/flutter-theming-apps, .github/skills/flutter-theming-apps and .opencode/skills/flutter-theming-apps in your project.

What does Flutter Theming Apps need to run?

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

Does Flutter Theming Apps 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 Flutter Theming Apps 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 Flutter Theming Apps use?

Flutter Theming Apps is published under the BSD-3-Clause licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Flutter Theming Apps use?

About 1.9k tokens (SKILL.md is roughly 7.6k 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 Flutter Theming Apps?

Skills that share tags, products or a category with Flutter Theming Apps: Design System (WrongStack/WrongStack, 370 stars), UI UX Pro Max (saoudi-h/solar-icons, 184 stars), UI UX Pro Max (Ohh-889/skyroc, 795 stars) and UI UX Pro Max (shobcoder/shob, 577 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Flutter Theming Apps?

btwld (a GitHub organization) maintains it in btwld/superdeck, which has 130 GitHub stars. The repository holds 23 skills in this directory. The repository was last updated on September 28, 2026.

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

Install Flutter Theming Apps

Facts

At a glance

What it does

When your agent uses it

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Implementing Flutter Theming and Adaptive Design

Contents

Core Theming Concepts

Material 3 Guidelines

Component Theme Normalization

Button Styling

Platform Idioms & Adaptive Design

Workflows

Workflow: Migrating Legacy Themes to Material 3

Workflow: Implementing Adaptive UI Components

Examples

Example: Modern Material 3 ThemeData Setup

Example: State-Dependent ButtonStyle

Example: Adaptive Dialog Button Order

Files

Compare with similar skills

Similar skills

More from btwld/superdeck

Related

Questions about Flutter Theming Apps