- Bubbles: own messages right-aligned in their own colour, agent answers left. - Chat icons (22, validated on the server), shown in list, top bar, project page. - Colour tags: eight fixed hues (new: pink) with theme-matched lightness and the highest chroma sRGB allows; stronger background tint. Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>