# Branding & themes

Everything that ties Orbit to a particular network or brand lives in
[`config.json`](/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, no signup required."
  }
}
```

This changes the connect screen, the console title, the network icon, and the CTCP VERSION/SOURCE
replies the client sends.

## 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](/wiki/themes/).

## Feature flags

Hide whole features per deployment:

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

- `push` — the Web Push notifications row.
- `imageUpload` — the composer image button + paste/drag upload.
- `register` — the "create an account" tab.