fab fa icons color code code example
Example: fab icon color
If you are using com.google.android.material.floatingactionbutton.FloatingActionButton, use app:tint:
app:tint="@android:color/white"
If you are using com.google.android.material.floatingactionbutton.FloatingActionButton, use app:tint:
app:tint="@android:color/white"