unselectedIconColor property
Change unselected item color If you don't want to change every single icon color use this property this will bulk change all the unselected icon color which does'nt have color property.
If icon color not provided then default unselected icon color is Colors.black this is also used to set bulk color to unselected icons
Only Availble for Bubble Bottom Bar
Implementation
final Color? unselectedIconColor;