I'd avoid black. Far too much maintenance to keep it looking clean for one thing. If you live in a sunny part of the world, you're looking at a guaranteed oven between May and October. Plus, I always find it odd when a car's paint is darker than its tires' sidewalls - which unless you regularly apply the tire-black stuff to your tires, will happen frequently with a clean black car.
I agree it looks fine - but so do a lot of other colors. And while I respect everyone who thinks black is the best looking color out there, I must disagree. Personally, I prefer the darker grays, greens and blues - the deep evergreen on the 3rd gen Maximas was one of my all-time faves. I just find black to be too common - like white. But that's me.
Bottom line - color choice is driven by your sense of aesthetics - but from a maintenance point of view, the darker the color, the harder it is to keep looking good. The point about swirl marks made by others in this thread apply to just about any dark color (but if you do your waxing right - by hand - you shouldn't have swirl marks, right)
And yes, I do realize that all these cons apply to my choice of colors too

. For the record, I'm currently driving a Titanium grey MS6 - moved here from an Azure Prelude VTEC - which was preceded by the aforementioned Deep Evergreen Maxima.