Color science expert skill with 286K words of reference material covering OKLCH/OKLAB, palette generation, accessibility/contrast, color naming, pigment mixing, and historical color theory.
Install
npx skills add nexu-io/open-design --skill color-expertnpx skills add nexu-io/open-design --skill color-expert -a claude-code -gnpx skills add nexu-io/open-design --skill color-expert -a codex -ggemini skills install https://github.com/nexu-io/open-design.git --path skills/color-expertgh skill install nexu-io/open-design color-expertgit clone --depth 1 https://github.com/nexu-io/open-design /tmp/nexu-io__open-design
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/nexu-io__open-design/skills/color-expert ~/.claude/skills/color-expert # Claude Code
cp -R /tmp/nexu-io__open-design/skills/color-expert ~/.agents/skills/color-expert # Codex, Cursor, Gemini CLI, Copilot, OpenCode