Wow, I didn't know he did it all digitally. I'd give my arm for a Cinteq
I'm the voice inside your head that you refuse to hear
I'm the face that you have to face, mirrored in your stare
~Foo Fighters - The Pretender
There used to be a thing on the Darkhorse site that brought attention to Dave's work and allowed you to color pages online, I don't know if it's still there but I enjoyed it.
Edit: I imagine his program is much more complicated, but here's what I was talking about: http://www.darkhorse.com/Features/Ga...King-of-Fear-3