as a colorblind woman i must tell you that most of us don't know we're colorblind.we , most i'm sure, see color but can't always discern one from another. my family is very helpful if i ask, but otherwise say nothing and chalk it up to my 'artistic temperment and creativity'. eye drs rarely believe that a woman they're testing is actually color blind. they don't even look for it most times because it is so rare in women. so it's very possible that your friend is either colorblind, or 'color ignorant'. color ignorant you can teach. color blind you can't.