If you're just talking frame and components, it would depend on what your plastics are going to end up being. Black will wear well and look great, but red will really stand out. Given the right plastics and graphics combo, a mix and match could work very well.
I am thinking of going with a Bright Red frame with red A arms and swing arm that fade to black at the end, Black front fenders and white back fenders. But not doing a thing till it starts to get to hot out to ride. Figure July.
building 2 is the overall plan ... just deciding what combination of colors to put together ... so if I build one with red frame and black body .. the other will be the opposite ... black frame red body ...
Red frame with black a-arms. I think white plastics would look killer with both or one of the combinations...I think something resembling the 08 700 GYTR edition with white fronts and red rears would look killer. But my ideas are irrelevant to what you are capable of with what you got though. lol