Vellum — AI Workspace Themes

Beautiful, minimal themes for Claude and ChatGPT. Transform your AI workspace with refined animated themes.

44 handcrafted themes for Claude and ChatGPT. Animated backgrounds, dark modes, and living wallpapers for your AI workspace. Vellum adds 44 beautiful themes to Claude and ChatGPT - turning your plain AI workspace into something you actually enjoy looking at. WHAT YOU GET 12 free themes included, no account needed 32 Pro themes with animated backgrounds — falling cherry blossoms, northern lights, a retro synthwave grid, deep space star fields, and more Works on both Claude (claude.ai) and ChatGPT (chatgpt.com) Themes apply instantly with one click Your selection syncs across devices HOW IT WORKS Click the Vellum icon in your toolbar. Pick a theme. Done. Every theme recolours the entire interface — sidebar, chat area, composer, buttons — using the platform's own design system, so nothing looks broken or half-styled. Pro themes add subtle animated backgrounds: particles, weather, cosmic effects, even a tiny T-Rex runner from the Chrome offline game. Animations use minimal CPU and never distract from your conversation. FREE THEMES Default, Graphite, Sage, Oat, Slate, Drift, Carbon, Plum, Mocha, Ember, Fog, Pine PRO THEMES (32) Sakura, Aurora, Midnight, Matrix, Forest, Synthwave, Inferno, Galaxy, Glacier, Vapor, Velvet, Ocean, Neon, Cosmos (interactive — moves with your mouse), Dino (Chrome T-Rex runner), Stardust, Constellation, Rainfall, Fireflies, Lava, Nebula, Storm, Mountains, Lantern, Vortex, Origami, Halo, Twilight, Petal, Supernova, Raindrop, Northern PRIVACY Vellum collects zero data. No analytics, no tracking, no telemetry. Runs entirely in your browser. Theme preferences sync through Chrome's built-in storage and nothing else. PRICING Free tier is free forever. Pro is $2.99/month or $24.99 for lifetime access. New themes are added regularly and included for all Pro members at no extra cost. Built with care, in London.