Beefing up my Epic Orks

I've just finished painting my Orks to fill out a 4,000 points Epic 40k army. Saving the best fun until last, I ended with a Great Gargant for my Warlord to ride. I have a basic Gargant in shades of metal but thought Warlord Tamrine would demand a red paint job. Writing the detachment lists ready for a practice game next week, prior to the big game on the 8th.