You should light him up in one colour I think. It's neither a Land Raider nor christmas tree, to be illuminated in a few diffrent colours, but it's great anyway. And one more thing your paintjob suck on this model, but honestly who cares, when its shinig in the dark XD
Mental note: Include genestealers with surface mount LED eyes in 3D Space Hulk...
Just imagine those suckers slightly hidden in the ducting, emitting a menacing glow. Drool.