blackBox method
Wraps the widget in a ColoredBox with black color.
Uses CupertinoColors.black which provides a pure black background. This color does not adapt to light/dark mode and remains consistently black.
Returns a ColoredBox containing the current widget with black background.
Example:
Text('Dark Mode', style: TextStyle(color: Colors.white)).blackBox()
Implementation
ColoredBox blackBox() => coloredBox(CupertinoColors.black);