kDefaultIconDarkColor top-level property
The default color for ThemeData.iconTheme when ThemeData.brightness is Brightness.light. This color is used in IconButton to detect whether IconTheme.of(context).color is the same as the default color of ThemeData.iconTheme.
Implementation
// ignore: prefer_const_constructors
final Color kDefaultIconDarkColor = Color(0xDD000000);