Heh.
=O You should take up colouring in Persona style
Yeah, especially since emulating the other part of Mr. Soejima's style isn't that easy.
Visiting the Persona 2: Innocent Sin PSP site inspired me to make some P2IS-style PRS sprites.
Rock and Karkitay were the subjects; Rock was based on (but not edited from) Tatsuya, whilst Karkitay just used Venus's colour palette. With Rock, I had to reconstruct parts of Tatsuya (though the waistline is based on Maya's); both he and Karkitay are entirely from scratch.
Maybe editing would've been easier, but dA hates sprite editors. :/
Oh, and these are the same sprites used in my next avatar (well, non-hat Rock isn't). I'll have that uploaded in a second.