Who cares about the resale value of your wheels!?!? You buy a car to drive and have fun with - not to worry about selling years down the line. If you worried about resale, then you wouldn't buy a new car in the first place!
I'm a big fan of black wheels... but I agree with Mac7 that they have to be on a contrasting colour like white / silver / red. I've said it before, but I'm not convinced about black wheels with rising blue. Its just too dark a colour to have the contrast.