what do you mean by white; What "Fantasy Skins", and what genitals are you using?
In order - this is part of a shot I did of the same scene with all the clothing set to .15 cutout opacity for an x-ray thing.
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And Genesis 8 Female Genitalia.
There's a script to copy the shader settings to geographs, specifically for genitals but can be extended to any other geograph, supposedly. It's... suddenly not working, despite just working on other characters I've created as tests.
I'm not sure if it's the particular shade of green I'm using or if some of the alternate maps of Uchenna are getting in the way somehow.
-edit- yeah, that was it. Have to apply them in the right order.