Sorry, no idea how to fix that. I simply extracted the texture files with SB3Utility, adjusted the saturation with Gimp and put them back into the Unity3D container. If you don't have that problem you described with the files provided by FutaBoy, I suppose my editing broke something in the...
I edited the textures, so that the pussy is less red. Actually, it now basically has the same color saturation as the surrounding skin. There are visible seams with some skins (at least one) though. If you wanna try:
https://mega.nz/#!hvZXnBJJ!lrDbpRPx-2rUrm4c8C31WaEjb1tl40J1SYyGdF-Cq3M
Hope...