Open source. Open possibilities.

Spruce CSS is an open-source, lightweight Sass-based CSS design system and framework offering variables, mixins, functions, few utility classes and CSS custom property theming with dark mode.

Catppuccin is a community-driven pastel color theme offering four warm flavors with 26 colors each, plus documentation, style guide, and cross-tool integrations.

GitHub Dark is a userstyle project that applies a dark theme to GitHub, reducing eye strain during coding sessions. It includes syntax highlighting themes for GitHub, CodeMirror, and Jupyter, and is designed to be used with browser extensions like Stylus.

Auto Dark Mode automatically switches Windows 10 and 11 between dark and light themes based on sunrise, sunset, ambient light sensors, or custom schedules. It enhances productivity by handling theme changes without manual intervention.