I know of a girl, who was shunned by her grandmother because she was deemed 'dark-skinned'.
(Edit 30/3/'13: I've got some new brushes, so tried it out on this painting. Generally reworked her skin and hand textures...nothing too exciting, really. But the test drive result was, to me, great...and I'm quite happy with how our girl turned out. I didn't mention it before, but this was my first time painting darker skin, and I must say they're much funner and easier to work on. I'm definitely painting more coloured guys and girls in future!)