anchor.diff:    ///  * [splashFactory], which defines the appearance of the splash.
     final Color splashColor;
   
  -  /// The color used to highlight the active states of toggleable widgets like
  -  /// [Switch], [Radio], and [Checkbox].
  -  Color get toggleableActiveColor => _toggleableActiveColor!;
  -  final Color? _toggleableActiveColor;
  -
     /// The color used for widgets in their inactive (but enabled)
     /// state. For example, an unchecked checkbox. See also [disabledColor].
     final Color unselectedWidgetColor;
  
positive.code:       'No longer used by the framework, please remove any reference to it. '
        'For more information, consult the migration guide at '
        'https://flutter.dev/docs/release/breaking-changes/toggleable-active-color#migration-guide. '
        'This feature was deprecated after v2.13.0-0.4.pre.',
      )
      Color? toggleableActiveColor,
      @Deprecated(
  
negative.code:   )
    Color get backgroundColor => _backgroundColor!;
    final Color? _backgroundColor;
  
    /// The color used to highlight the active states of toggleable widgets like
    /// [Switch], [Radio], and [Checkbox].
    @Deprecated(
      'No longer used by the framework, please remove any reference to it. '
      'For more information, consult the migration guide at '
      'https://flutter.dev/docs/release/breaking-changes/toggleable-active-color#migration-guide. '
      'This feature was deprecated after v3.4.0-19.0.pre.',
    )
    Color get toggleableActiveColor => _toggleableActiveColor!;
    final Color? _toggleableActiveColor;
  
    /// Creates a copy of this theme but with the given fields replaced with the new values.
    ///
  