# messageActionSetChatTheme

The chat theme was changed

```tl
messageActionSetChatTheme#b91bbd3a theme:ChatTheme = MessageAction;
```

### Parameters

| Name | Type | Description |
| --- | :---: | --- |
| **theme** | [ChatTheme](/type/ChatTheme.md) | The new chat theme. |

### Type
[MessageAction](/type/MessageAction.md)