I've only noticed two skin tones, pale Caucasian and tanned Caucasian. I would love to see some darker skin colors, maybe a total of four or five. I understand that this might make the breeding harder to program, with the kids looking like the parents

I too would like to see different skin hues. But I don't think it would be any harder for breeding. In fact, it would make things more interesting. I don't care for the multi-parthner either, my villageers marry. And at this point I just keep jouranls of family history so that I know who is who.