- Tool messages get emerald/teal avatar with wrench icon - Tool message bubbles have emerald left border and darker bg - Normal assistant messages keep purple robot avatar - Clear visual hierarchy: user (blue) / assistant (purple) / tool (green) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>