I found this book on eBay called Shikisai Oukoku 2 that has some video game artists explaining their coloring techniques and how to do them, and it includes Kazuma Kaneko! I want to get it, but I can’t justify spending a total of something like $60 for it. At least, not until I have a job.
Volume 1 features Akihiro Yamada of Mystic Ark, and 3 features Ayami Kojima of Castlevania!
I really want all of these.