MaterialApp

theme:

ThemeData

accentIconTheme:

IconThemeData

color:

Colors

red

),

),

Code after migration:

MaterialApp

theme:

ThemeData

floatingActionButtonTheme:

FloatingActionButtonThemeData

foregroundColor:

Colors

red

),

),

Timeline

Landed in version: 1.16.3
In stable release: 1.17

References

Design doc:

Remove FAB Accent Theme Dependency

API documentation:

FloatingActionButton

ThemeData

FloatingActionButtonThemeData