Vellum — AI Workspace Themes is a Chrome add-on that enhances the visual experience of Claude and ChatGPT with a selection of beautifully crafted themes. It offers 44 themes, including 12 free options, designed to refresh the interface with animated backgrounds and dark modes. Users can easily apply their chosen themes with a single click, and the selection syncs seamlessly across devices, ensuring a cohesive experience.

The add-on features 32 Pro themes that incorporate dynamic animations such as falling cherry blossoms and cosmic effects, while maintaining low CPU usage. Vellum prioritizes user privacy by collecting no data, ensuring a secure experience while customizing the workspace. The free tier remains accessible indefinitely, while Pro membership offers additional themes for a nominal fee.