The only textures The Sims used was on their bodies, the rest were just images all aligned on the propper perspective. If one wanted to they could make The Sims looks like that painting with all those weird perspectives that don't line up. I used to edit a little too, I was waiting for "Emma" or whatever that thng was called to come out, but I got uninterested, along with my transmogrifier stopped working. The Sims textures were pretty basic, sometimes.. I made a few "Stephen" Sims in my time
(by editting their face)