black looks good against the liquid grey, but it's more subtle. If you want flare, maybe red or orange? If you're going with an intake (good idea) choose from the colors available and stick with a theme. This is what I did (all blue parts).
05 ZX3: Steeda intake, 67mm TB, custom 2.5 Magnaflow exhaust, Tom's Tune.
New: 04 SVT : K&N panel filter, 3 performance motor mounts, Taylor wires, orp, 67mm TB, Tom's Tune.