I really don't understand how such people exist. I mean, I understand feeling colour-specific. I don't think that is unusual. 'Black is beautiful'. People feel proud of what they are. Or ashamed. For no real purpose, because genetic inheritance isn't a choice. But that is inward-looking.
I even think I understand colour-isolation - wanting to be around people who look like you, although it is an unpleasant way of thinking. This can also be produced by accents - for instance, I find it really hard to understand some Indian accents and that makes it very difficult to form relationships. I can't hear what they are saying even though I am very fond of the culture's products. But I would say the same of anyone from, say, Glasgow. I just have no idea. It's embarrassing.
Colour-violent is something different. Angry. Sorta thoughtless, given people are unique, and this is true within races. So how can you apply that hatred to skin colour. It's so peripheral. Maybe I just haven't had the experience that produces it, in which tribes are formed this way.
Does it mostly come from the borders of neighborhoods of people of different colours? Or is it from isolated rural districts in which there's limited exposure. I suppose it has been researched.