Avatar: The Last Airbender | Nations » Background Defaults
A quick pull of the hair/skin/eye tones used for the Earth Kingdom, Fire Nation, and Southern Water Tribe citizens. I tried to get my colors all from similar daylight lighting so they should generally all be comparable with each other. This is by no means a comprehensive view (especially in regards to the Earth Kingdom, which is so large that I mostly just pulled from Ba Sing Se characters) — seriously, I’m amazed and impressed by how different every background/minor character looks from each other (in their face features as well, which, obviously can’t be seen here, but)!
Added the Air Nomads here.