css-theme

Defines CSS theming systems with modern tokens for light/dark support.

Updated Dec 19, 2025
One-click install
npx skills add https://github.com/beardcoder/mens-circle --skill css-theme
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: css-theme
Source: https://github.com/beardcoder/mens-circle/tree/main/.claude/skills/css-theme
Command: npx skills add https://github.com/beardcoder/mens-circle --skill css-theme

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Build robust CSS theming systems using modern CSS techniques, enabling scalable design tokens without JavaScript or preprocessors.

Core Features & Use Cases

  • Primitive color tokens and semantic layers for consistent design systems
  • Light/Dark mode using light-dark() and @property for typed custom properties
  • Multi-theme support with token overrides and accessibility-conscious defaults

Quick Start

Create a dark theme using the token system for a sample UI.

Frequently Asked Questions about css-theme

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I build a CSS theming system using design tokens without JavaScript?

Build a CSS theming system by defining primitive color tokens, semantic layers, and component tokens using modern CSS features. This approach enables scalable design tokens directly in the browser without requiring JavaScript or CSS preprocessors.

How does the light-dark() CSS function work for automatic theme switching?

The light-dark() CSS function enables automatic light and dark mode switching by returning different values based on the user's system preference. Combined with @property registrations for typed custom properties, it creates robust, native theme support.

Can I use oklch color spaces and color-mix() for accessible contrast in CSS?

Yes, modern CSS theming systems can utilize oklch color spaces and color-mix() functions to dynamically blend colors. This ensures accessible contrast ratios are maintained across semantic tokens in both light and dark modes.

What is the best way to structure multi-theme CSS design tokens for scalability?

The best way to structure multi-theme design tokens is by layering primitive colors, semantic tokens, and component-level overrides. This hierarchy allows specific themes to override base tokens while maintaining accessibility-conscious defaults.

Does CSS theming with @property registrations work across all design projects?

CSS theming using @property, light-dark(), and oklch relies on modern browser CSS support. Projects requiring compatibility with older browsers may need fallbacks, as these native CSS color functions and custom property registrations are modern features.