Black is very nice when it's clean and polished. But it has a bad reputation in several areas:
* Makes car too hot
* Shows swirls, imperfections, dirt
But then again, it would depend on exactly what you plan to do with the car. A daily driver? See above notes. Weekend pleasure vehicle, show car, rallye car, etc? Black would be great.
If you decide Black is not for your car, then let your imagine and preferences take you where you want to go. Keep an eye out on the road and in parking lots. You'll begin to pick up some ideas based on what looks good to you.