So, for my first artist who works in Photoshop is Rod Reis. He is a colorist for DC Comics, and colors his work in Photoshop. He did the colors for Blackest Night.

My second artist is another Colorist for DC Comics, Alex Sinclair. He also Colors his work in Photoshop. 

And then there is my final artist, another VERY well known colorist. Dave Stewart. He did work on the Hellboy Series. His style is flat and subtle, but its rather effective.