"grey" and "dark" rendered identically apart from accent colour, so drop "grey" as a selectable colour scheme everywhere in the frontend (index.css, api.ts's ColorScheme type, the NavMenu picker, the downloadable BUILTIN_THEMES table) and keep "dark" as the single equivalent theme. Existing settings.json files saved with color_scheme: "grey" keep loading correctly: the backend ColorScheme enum aliases the legacy "grey" serde value onto Dark, so old configs transparently migrate to "dark" without any manual intervention. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XFUNZwCvz3kcod3352ZR2o