In the VSS control prop, there are material zones. These are the zones that hold the shaders for various materials for a figure. These get copied to your figure, and then VSS plugs in the correct image files for your figure.

All the skin zones get the Template Skin material shader. On the left side of that shader, there are all kinds of nodes to let you easily modify the properties of the skin shader. The rest is spaghetti - don't look at it.

I've attached a screen shot highlighting the Tint parameter. Click it for full size.

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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)