You can go into the textures folder. All the transmaps for styles are in there , but there's only one basic color pic. I have color swatches that I swap out for the original. You have to change the color by swapping that pic for another color pic. The toes I change color to match whatever color I've chosen for the pantyhose by changing the base color in surface editor.
I like this set because it is a second skin, but lays over the original texture map of the model.
You can make your own tex mats, load the original, then go into the surface editor and use browse to swap out the maps.
PM me if you need to. I use AI3ds Superfit all the time.