Add Theme Color Options

[staging-tembo]

Summary

Implemented theme color selector for chat interface with multiple color themes:

• Added new CSS variables for Ocean, Aurora, and Forest themes
• Created ThemeSelector component for theme switching
• Implemented useColorTheme hook for theme management
• Integrated theme selector in header
• Supports persistent theme selection via localStorage

Changes

• Added theme-specific CSS variables in globals.css
• Created new theme-selector.tsx component
• Added use-color-theme.ts hook for theme management
• Updated header.tsx to include theme selector

Want tembo to make any changes? Add a review or comment with @tembo and i'll get back to work!

[staging-tembo]

Requesting review from @cooper-gadd who has experience with the following files modified in this PR:

• app/globals.css
• components/header.tsx

[vercel]

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Project	Deployment	Review	Updated (UTC)
chat	Error		Jan 19, 2026 6:17pm