BluEcho,

Natural lip color is best on the color map, not necessarily the same color as the skin. And with that, a black-and-white mask (such as ODF made already) to define the lip region. This can be used very effectively in two ways:

For the Photoshop user, this mask can be a layer mask where the lips can be colored as a layer and then flattened - the user can make his/her own choices about lip color then.

For the shader user, this mask is used (as I've already demonstrated) to vary the gloss, bump, and color of the lips.

The same can be done for the nipples.

If you really want to get into a powerful texturing/shader kit, you'd not do anything  but plain skin on the color map. Instead, make nice masks for:

Tan lines
Eye shadow
Blush
Eye liner
Freckle concentration and strength

etc.

I can easily incorporate masks like those into VSS shaders. If there was a standardized freebie set of these masks then I'd make tons of shader effects using them, since I could expect everybody has or can get these masks.

That's what I did for my Apollo shader set a couple years ago. I knew that Apollo came with or you could get displacement maps, hair maps, a caucasian skin and an African skin, etc. I built shaders for these - using the shader parameters users were able to transform these basic building blocks into hundreds of very different ethnic and other looks.

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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)