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customizing-streamlit-theme

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Easily style Streamlit apps with themes

Software Engineering#theming#css#customization#ui-design#streamlit#dark-mode#config.toml
Authorcathayrisk
Version1.0.0
Installs0

System Documentation

What problem does it solve?

Streamlit apps often look inconsistent or require fragile CSS hacks to match brand colors and UX expectations; this Skill explains how to apply reliable, maintainable theming so apps look consistent across updates and users.

Core Features & Use Cases

  • Configure global colors, fonts, and light/dark bases via the app configuration file to ensure consistent UI across pages and widgets.
  • Define separate light and dark theme variants so users can switch modes without breaking visuals, and detect the active theme at runtime for adaptive logic.
  • Provide guidance to avoid custom CSS, and when necessary, recommend using key-based widget targeting for minimal, targeted overrides.
  • Use Case: Quickly standardize the appearance of internal dashboards and public demos by setting primaryColor, backgroundColor, and fonts in the Streamlit config.

Quick Start

Edit your .streamlit/config.toml to set primaryColor, backgroundColor, secondaryBackgroundColor, and font, then restart the app to see the theme applied.

Dependency Matrix

Required Modules

None required

Components

Standard package

💻 Claude Code Installation

Recommended: Let Claude install automatically. Simply copy and paste the text below to Claude Code.

Please help me install this Skill:
Name: customizing-streamlit-theme
Download link: https://github.com/cathayrisk/Anya/archive/main.zip#customizing-streamlit-theme

Please download this .zip file, extract it, and install it in the .claude/skills/ directory.
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