What is flutter-theming-apps?

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

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

It keeps the app’s visual style consistent and helps avoid outdated theme settings and poor contrast.

flutter-theming-apps — Skill by mdazadhossain95/flutter-agent-skills

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/mdazadhossain95/flutter-agent-skills/flutter-theming-apps/github.svg)](https://agentmods.dev/skills/mdazadhossain95/flutter-agent-skills/flutter-theming-apps)

Your own site

<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/github.svg" alt="Measured on agentmods" height="20"></a>

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.

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 94% copy Near-identical to another mod 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.

Model	Per session	Once invoked
Fable 5.1	$0.00036	$0.01806
Opus 5.5	$0.00014	$0.00722
Sonnet 5.5	$0.00007	$0.00361
Haiku 4.5	$0.00004	$0.00181

Measured 1mo ago against content hash c5dd02595ba8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, 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 1mo 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.

Origin

This is a copy

94% identical to flutter-theming-apps — 8 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

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

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.

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.

1mo 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 3mo ago), licensed MIT. It adds 36 tokens to every session and 1,806 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 94% identical to flutter-theming-apps, differing in 8 lines, and is treated as a copy.

Design and UX Mobile

display-glasses-with-jetpack-compose-glimmer

Provides guidelines for developing projected Android XR apps for display glasses using the Jetpack Compose Glimmer UI toolkit. Covers Glimmer design principles, workflows, and interaction models for the glasses form factor. Use this skill to build an Android XR Augmented Experience app with Jetpack Compose Glimmer.…

android/skills · 112 tokens

glance-canonical-layouts

Use this skill to create home screen widgets using Jetpack Glance Canonical Layouts from the Android Platform Samples project, or when asked to implement standard widget layout patterns (including Check List, Image Grid, Snap Scrolling, and Standard Toolbar).

android/skills · 56 tokens

expo-design-system

Build and maintain a design system inside an Expo app - a reusable theme of design tokens (color, spacing, typography, radius, shadow, motion), reusable component structure with variant/size/state prop conventions, and rules for when to extract a repeated view into a shared component. Use when creating or organizing…

expo/skills · 197 tokens

flutter-theming-apps