See Merchant Resource brows - eyes, LIE make-up and all the rest on the blog then take your pick.
As for the materials. Custom skins made for one character and used on others is my guess. You'll find a lot of the game rippers use the default G8 textures because the game textures are of poor quality. The images you provided look like a filter has been used and some postwork in PS perhaps.
The thing about skins, and I've said this before, is that their appearance is so dependent on the lighting environment (hue, saturation, colour balance etc. it's virtually impossible to identify them from a picture.
I've lost count of the times I've DL a character with a skin I like, only to have it look entirely different when I render it with neutral lighting, around 6500K.