overlayColor property
The color for the radio'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 RadioThemeData.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;