surfaceTintColor property
The color used as an overlay on color to indicate elevation.
This is not recommended for use. Material 3 spec introduced a set of tone-based surfaces and surface containers in its ColorScheme, which provide more flexibility. The intention is to eventually remove surface tint color from the framework.
If null, PopupMenuThemeData.surfaceTintColor is used. If that is also null, the default value is Colors.transparent.
See Material.surfaceTintColor for more details on how this overlay is applied.
Implementation
final Color? surfaceTintColor;