theme-management

Implement Light and Dark theming with CSS variables and Zustand persistence.

1|Updated Apr 24, 2026

Search Tags:#theming #accessibility #zustand #localstorage #dark-mode #css-variables #design-tokens

Ready to run

npx skills add https://github.com/Artag-Chris/xproyect --skill theme-management

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: theme-management
Source: https://github.com/Artag-Chris/xproyect/tree/main/.agents/skills/theme-management
Command: npx skills add https://github.com/Artag-Chris/xproyect --skill theme-management

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Theming inconsistencies across UI projects cause accessibility issues and brand drift. This Skill provides a robust multi-theme system (Light and Dark) with design tokens, CSS variables, and smooth transitions to ensure consistent visuals and preserved user preferences.

Core Features & Use Cases

Central design tokens drive all components with a single source of truth, guaranteeing color contrast and branding in both light and dark modes.
Root-level theme switching uses the .dark class on the HTML element, with CSS variables powering all styles for predictable theming.
Persistence of user preference is implemented via Zustand persist middleware and localStorage so theme choice survives page reloads and sessions.

Quick Start

Toggle the .dark class on the root HTML element to switch themes and persist the user’s preference with Zustand so it remains across sessions.

Frequently Asked Questions about theme-management

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

FAQPage Schema

How do I implement dark mode with CSS variables and design tokens?▼

Dark mode with CSS variables uses a root `.dark` class on the HTML element to swap design tokens. This approach ensures a single source of truth for styling, guaranteeing consistent branding and color contrast across light and dark themes.

How do I persist user theme preference across sessions with Zustand?▼

To persist user theme preference across sessions with Zustand, use the persist middleware to save the selected theme to localStorage. This ensures the user's light or dark mode choice survives page reloads and browser restarts.

What is the best way to manage accessible theming across multiple UI projects?▼

Accessible theming across multiple UI projects is best managed using a centralized design token system driven by CSS variables. This enforces consistent color contrast and prevents brand drift by providing a single source of truth for all components.

Can I use Zustand for local storage theme persistence without additional dependencies?▼

Yes, you can use Zustand for local storage theme persistence without additional dependencies. Zustand includes built-in persist middleware that directly interfaces with localStorage to save and retrieve user theme preferences across sessions.

Why does my dark mode theme flash on page reload when using Zustand?▼

Dark mode flashing on page reload often occurs when the Zustand store rehydrates asynchronously from localStorage. Ensuring the root `.dark` class applies immediately during initial load prevents the flash of incorrect theme.

Does theme-management work with existing CSS variable setups?▼

Yes, theme-management works with existing CSS variable setups by toggling a root `.dark` class on the HTML element. It integrates token-driven styling seamlessly, allowing your current CSS variables to respond to theme changes predictably.