Yeah, my rig is functional but physically, its a mess. :P I also have a roll of those tubing in my room but I'll get to work on wiring after midterms...
For NZXT LEDs, I'd choose red. I'm actually working on getting have the same color scheme you've got going on (white, black,red, gold) ATM I'm hunting down some gold thumbscrews for my PCI slot covers. Then I'm going to change out all the LEDs in my fans/fan controller/etc to white.
Speaking of NZXT, those real sleeved extensions they make are tempting...way too expensive though. I guess I'll have to live with my rainbow wires for now until I find a cheaper solution like those tubings, lol