Quote - What changes would I need to make for a character with non ccausian skin, say like green, blue ro red skin? I assume it'd be diffuse, but I don't want to change the diffuse of the eyes and iris, etc.

Are we talking about how to force a normal human skin texture to look like your avatar? Or are we talking about what shader to use with a color map that's blue or some other non-human color?

If the latter, probably not much. You might want to change the SSS color in the Template Skin material. It's a red tone for humans. You can change it to any color you like. Once you open the Template Skin material (it's on the control prop) you'll find all the interesting parameters in nodes on the left side. The SSS ones are near the bottom.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)