Yeah, don't really know what you are goin' for with the whole orange + black thing...
But you can always do something like this once your handles are black. Paint the little button orange as well as inside the keyhole. That would set it off a little bit..
Also, you can powdercoat your brake calipers orange. That would probably look good..
Ive also seen people make the z on the rear badge 370
Z various colors. As well as the "O" in nismo.