Satin grey does sound nice. I really hadn't thought about it that much but it would have to be something like a grey or black to go with the motherboard/ waterblocks or a red to go with the coolant, fittings, memory and lighting.
Holy...that case is huge.
Liking the copper tubing. Keep them coming!
You'll need to remove the competitor link, dude, build looks immense though! Copper tubing really does look awesome.