Heh, it's going to take a while for everyone's concept of natural skin tones to catch up with Warhol's, lol. Though you may not realise, I am actually aware of the flaw in my argument; that just because note values don't change it doesn't mean that perfect pitch isn't real, but I just find some people are a little far-reaching in their concepts of perfect pitch, and end up saying that basically some people are born with the ability to hear the perfect "A" or whatever, that is some objective thing.
Also, I think that people are not born with perfect pitch, it has more to do with exposure to lots of music at a very young age. In the same way that children must be exposed ot language immediately if they are to learn it (studies of isolated humans have proven them unable to learn language effectively when they are older), people's ear must be exposed when they are very young to lots of music, as you can't absorb music in the same way when you are older.
Kinda makes you mad at your parents, doesn't it?