# Widgetbook's UI Theme

If you want to change some Widgetbook's UI colors, or want to enforce a specific theme mode, you can do so using these parameters:

| Parameter    | Description                                                                                                                       |
| ------------ | --------------------------------------------------------------------------------------------------------------------------------- |
| `lightTheme` | [`ThemeData`](https://api.flutter.dev/flutter/material/ThemeData-class.html) that is used when `themeMode` is `ThemeMode.light` |
| `darkTheme`  | [`ThemeData`](https://api.flutter.dev/flutter/material/ThemeData-class.html) that is used when `themeMode` is `ThemeMode.dark`. |
| `themeMode`  | Controls which [`ThemeMode`](https://api.flutter.dev/flutter/material/ThemeMode.html) to use. Defaults to `ThemeMode.system`.     |

```dart
@override
Widget build(BuildContext context) {
  return Widgetbook(
    lightTheme: ThemeData.light(), // Custom light theme
    darkTheme: ThemeData.dark(),   // Custom dark theme
    themeMode: ThemeMode.light,    // Forcing light mode
    // ...
  );
}
```