flutter-theming-apps

flutter-theming-apps is a skill for Claude Code, Codex from mdazadhossain95/flutter-agent-skills. It costs 36 tokens per session (1,806 once invoked), scanned A, original, MIT.

A guide to setting shared colors, text styles, and component appearances across a Flutter app using Flutter’s theme system.

In plain words
What is it for?
Use it when defining app-wide or section-specific colors, typography, buttons, Material 3 styles, or platform-adaptive designs.
Why use it?
It keeps the app’s visual style consistent and helps avoid outdated theme settings and poor contrast.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it when defining app-wide or section-specific colors, typography, buttons, Material 3 styles, or platform-adaptive designs.

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Install with agentmods
npx agentmods add skills/mdazadhossain95/flutter-agent-skills/flutter-theming-apps
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add mdazadhossain95/flutter-agent-skills --skill flutter-theming-apps
Clone the repo
git clone --depth 1 https://github.com/mdazadhossain95/flutter-agent-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for flutter-theming-apps

README.md
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Your own site
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Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for flutter-theming-apps

Your own site · 80×15
<a href="https://agentmods.dev/skills/mdazadhossain95/flutter-agent-skills/flutter-theming-apps"><img src="https://agentmods.dev/badge/skills/mdazadhossain95/flutter-agent-skills/flutter-theming-apps.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,806 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00036 $0.01806
Opus 5 $0.00018 $0.00903
Sonnet 5 $0.00007 $0.00361
Haiku 4.5 $0.00004 $0.00181

Measured 8d ago against content hash c5dd02595ba8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

flutter-theming-apps scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/flutter-theming-apps/SKILL.md · 161 lines

How it starts

The opening of the file, as written. The whole thing — 161 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Implementing Flutter Theming and Adaptive Design

Contents

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.

Read the full file on GitHub · 161 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 8d ago First seen · 161 lines · 36 tokens per session scan A c5dd02595ba8

Subscribe to this mod's changes

flutter-theming-apps is a skill published in the GitHub repository mdazadhossain95/flutter-agent-skills (2 stars, last pushed 2mo ago), licensed MIT. It adds 36 tokens to every session and 1,806 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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