A somewhat embarrassing question to feet?

see generally feet from ever different, alone or even by the circulation of the thick skin of the feet. otherwise represent the colors as follows Pink: thin skin of the feet with good circulation ... mostly in the younger faction or people with skin type with red hair- bright white: not distant or existing corneal orange, red, yellow: the rub comes from the shoe sole by wearing socks without shoes for example and the sole is not colorfast

well, while I'm Anglo, my general skin tint is more yellow, my sister is more pink so my feet are more yellowish and her's are pinker I think red feet generally mean that they either hurt, or have some other problem, white, at least on an Anglo often means poor circulation (blackish is NO circulation and they should be in the hospital not the beach!) and orange... I suspect too much tanning solution...