Section: Configuration
Order: 110

# Branding & themes

Everything that ties Orbit to a particular network or brand lives in
[`config.json`](https://orbit.tchatou.fr/docs/config/) under `branding` and `defaults` — no code changes, no rebuild.

## Rebrand

```json
{
  "branding": {
    "name": "ExampleChat",
    "icon": "https://example.org/logo.svg",
    "url": "https://example.org",
    "tagline": "Chat with",
    "taglineEm": "everyone.",
    "subtitle": "Public rooms, private messages, and moderation that works."
  }
}
```

`branding.name` and `branding.icon` reach **everywhere** the app identifies itself: the connect
screen, the browser tab title + **favicon**, desktop and Web Push notifications, the PWA install
prompt (name + description, localized), the iOS home-screen title, the network icon, and the CTCP
VERSION/SOURCE replies. Point `icon` at your own logo URL and the tab icon follows.

## Themes

Orbit ships four themes:

- **light** — clean, default.
- **dark** — easy on the eyes.
- **yomirc** — a retro mIRC / Windows-95 skin (silver chrome, fixed-width log lines).
- **yomirc-dark** — the retro skin in a dark palette.

Set the default for new users:

```json
{ "defaults": { "theme": "dark" } }
```

Users can switch any time in **Settings → Appearance**. See the [Themes wiki page](https://orbit.tchatou.fr/wiki/themes/).

## Feature flags

Hide whole features per deployment:

```json
{ "features": { "push": true, "imageUpload": true, "register": false } }
```

- `push` — Web Push notifications: the Settings row **and** the re-subscribe-on-connect.
- `imageUpload` — the composer image button **and** paste / drag-drop upload.
- `register` — account self-service: the "Create account" button, the "Forgot password" link, and their FAQ entries (all hidden together).

## Languages

The UI and the bundled plugins are fully translated in **10 languages** (auto-detected). Pin a
default with [`defaults.lang`](https://orbit.tchatou.fr/docs/config/); users can switch in Settings.