As someone with the same color 2nd gen that has had both shiny wheels and black, I say they look great now. They would look great black too though. The black powdercoat will be alot lower maintanence though. I speak from experience. With the black you just use a soapy rag and spray them off when you wash the truck, no waterspots to polish off.
I think black would look good but I like it the way it sits now. The black would definitely be a little easier to clean. As a side note I think getting the black taillight trim color-matched to the truck would look sweet.