surfaceTintColor property
Overrides the default value for BottomAppBar.surfaceTintColor.
This property is obsolete and will be deprecated in a future release: please use the BottomAppBarThemeData.surfaceTintColor property in data instead.
If null, BottomAppBar will not display an overlay color.
See Material.surfaceTintColor for more details.
Implementation
Color? get surfaceTintColor => _data != null ? _data.surfaceTintColor : _surfaceTintColor;