Function mergeChatPanelColors

mergeChatPanelColors(
userColors: Partial<ChatPanelColors> | undefined,
theme: Theme,
): ChatPanelColors
Merge user-provided colors with theme-derived defaults.
Parameters
- userColors: Partial<ChatPanelColors> | undefined
  Partial color overrides from the consumer
- theme: Theme
  MUI theme used to derive the default palette
Returns ChatPanelColors
Complete colors object with user overrides applied on top of theme defaults
Example
```
import { useTheme } from '@mui/material/styles';

const theme = useTheme();
const colors = mergeChatPanelColors({
  localMessageBackground: '#4caf50',
  localMessageText: '#ffffff',
}, theme);
```
- Defined in chat/defaults.ts:235