Chroma AI — Customize your AI

Your AI, Fit Your Imagination

Customize your AI — Claude, ChatGPT, Gemini. Backgrounds, colors and marvelous effects, all from a single sidebar. Apply themes, upload custom wallpapers, and fine-tune glass, blur and color overlay effects for ChatGPT, Claude and Gemini.

Download — Chrome Web Store Theme Community

Same chatbot, a whole new space

One click turns the familiar into something new. Chroma AI is a free Chrome extension that themes ChatGPT, Claude and Gemini with custom backgrounds, wallpapers, fonts and glassmorphism effects.

  • 12 free premium color presets — background, accent and text colors swap together in one click
  • Upload your own background images and wallpapers (GIF and high-resolution supported)
  • Glass (glassmorphism) blur effect, opacity control and color overlay
  • Custom fonts and saved theme presets (Pro)
  • Custom theme presets — re-skin your chatbot as a messenger or a spreadsheet

Theme Community

Browse and apply themes crafted by other users — or upload and share your own GIF and high-res wallpaper themes. Explore the community →

Supported platforms

ChatGPT (chatgpt.com), Claude (claude.ai) and Gemini (gemini.google.com) — one extension styles them all.

Get started in 3 steps

  1. Pin the extension — click the puzzle icon in the top right of your browser.
  2. Open any chatbot — visit ChatGPT, Claude or Gemini as you normally would.
  3. Click the pinned Chroma AI icon and the editor sidebar slides in from the right.

Two simple plans: Free (core features, free forever) and Pro. Read the FAQ · Support