I love a black vehicle and have owned several, but I was always working too hard to try and keep it looking great. My wife's car, a White Explorer (her choice) is the 2nd white vehicle we've owned, and I have to say, although it's not the best looking (my opinion of course) it does stay looking nice a LOT longer than just about any other color out there. And here in New England, we have cars that look like crap for 4 or 5 months because of the wet roads / salt. But the white tends to hide that dirt pretty well. And when I finally get to clean it, I'm always shocked at how dirty it really was.
Since you live in LA, I would have a harder choice making that decision, since you will likely have a vehicle that stays cleaner longer. So, I guess I was absolutely no help!(dunno)