Science Fiction

I think they're both important and connected issues in SF.

Actually, I don't know why I didn't think of them earlier, but: Elizabeth Moon's space opera novels are far future (it's not always possible to figure out the ethnic origins of most of her characters), and most of her characters are people of color.

So far I've identified major groups that seem to be Latino/black Latino, black, and possibly Turkish. There are a couple of planets settled by Texans (that's actually my least favorite part of her world-building, because both the good Texans and the bad Texans are kind of one-dimensional). The characters who are probably of European origin include possibly-Greek and possibly-Spanish. But all of them (Texans and one ranching planet with a South American feel aside) are so far removed from their Earth origins that they feel like a plausible far-far-future SF development of human cultures.

In her Vatta's War novels, light-skinned people and blonds are unusual enough to be remarked on.