Not entirely helpful, but the most recent books have some excellent CA art. Especially the Core RPG book, though theirs is very old style with old model Charontids in the art.
In the same RPG Basic Manual there is some very interesting Art of Veteran Morats fighting Oniwabans and one Daturazi fighting the Ninja Character, Kitsune. . . Another very interesting one has a Corregidoran Jaguar firing full-auto spray with a Chainrifle against Gaki / Pretas (it is practically screaming: "Madre De Dios! They're coming outta the walls!! They're coming outta the goddamn walls!!! Let's book !!!!!"). . . All of those are in the "Skill / Talents" section of Character Creation rules. . .
Hi Bohrdog. I'm not sure what kind of artwork you're looking for but i think of painted mini's as artwork. This one is actually a bust from Luxumbra. I'm sure it could be turned into a fantastic wallpaper or something with a little love.