App Themes
Settings → Appearance ships eight app themes. Your choice repaints the whole app — brand chrome, accents, and the chat background all follow it, not just the top bar. Light/Dark/Auto applies to themes that ship both modes; fixed-mode themes show their own complete look.

The eight looks
Each shot below is the same conversation, reskinned end-to-end by the theme — chrome, bubbles, input bar, and status strip included.

Signature electric-blue · light/dark

The canonical Hermes dark teal

Light mode · Nous-blue on cream

Deep blue-violet, cool accents

Warm crimson and bronze

Clean grayscale, minimal

Neon green on black

Soft pink and warm ivory
Related
- Custom Avatars — swap the agent orb for a sphere skin or an animated pet, and give each profile its own icon.
Themes are client-side and available on both flavors (Google Play and sideload) — they need no Device Control permissions and are never sent to Hermes.