overlayColor property
The color for the checkbox's Material.
Resolves in the following states:
If null, then the value of activeColor with alpha
kRadialReactionAlpha, focusColor and hoverColor is used in the
pressed, focused and hovered state. If that is also null,
the value of CheckboxThemeData.overlayColor is used. If that is
also null, then the value of ThemeData.toggleableActiveColor
with alpha
kRadialReactionAlpha, ThemeData.focusColor and ThemeData.hoverColor
is used in the pressed, focused and hovered state.
Implementation
final MaterialStateProperty<Color?>? overlayColor;