This one gets dark mode right by teaching you the actual system, not just "make the background black." You'll learn the three-tier token architecture (primitives, semantic, component) that makes theme switching maintainable, plus the counterintuitive stuff like why pure black causes eye strain and why elevated surfaces need to be *lighter* in dark mode, not darker. It covers WCAG contrast math, OLED battery savings, and even atmospheric theming for weather apps. Pairs well with color contrast auditors since dark mode surfaces are where accessibility bugs hide. Skip it if you just need general color theory, but if you're building a real theme system, this teaches the engineering approach that scales.
npx skills add https://github.com/erichowens/some_claude_skills --skill dark-mode-design-expert