Apimpnc

No es un modelo compilado como tal, lo hice hace ya mucho tiempo para un tutorial.
Anthro Making Tutorial - Part 1

You be better asking someone who is more active here, I just visit every month or so.
This account is not relevant for me.

Trial and error my friend

I don't know what you mean, but the skin color is mostly just the bucket tool, but for the belly color and extra details you have to paint them by hand.

It can be applied to any model in SFM and Gmod as far as I know, including pokemons