this is the final result, i'm pretty satisfied with it. quite similar with GW's Catachan scheme but with more personality in my opinion.
if you are wondering from where this miniature is coming from, well, it came together with a tank commander in the old Leman Russ Exterminator kit (1999). yes, with the 3rd edition codex you could deploy that tank but it was far less powerful than now. it is a leman russ passenger, and should look like this:
how nice! the tank commander is the next!