Katie Wittrock from ADP requested the "Save in Library" toggle to revert to green for better visibility, as it currently turns black. When checked, the black color is due the Primary color set under Org settings >> Company information >> Company details >> Theme color and requested client to change the color. However, client prefers not to change the primary color in Org Settings and mentioned that the toggle was green irrespective of the theme color.
CC: @lee