The tact discussion reminds me of a time when DD was about 3 or 4 and we were at the pools - she was playing with a little Aboriginal boy and his mum and I were just watching semi-chatting (didn't know each other but the kids were having fun) - DD comes over and asks the boy's mum "scuse me, why is your skin that funny colour?"

She and I looked at each other, laughed and she then explained that it was because of her race etc - got to love the innocence of children hey