i want these rims on my truck im getn a set next week and debating to keep em white or paint em black
http://www.summitracing.com/parts/USW-70-5080/
I think you're making a good decision by sticking with alloy wheels. It minimizes unsprung weight.
As far as color, what color is your truck? How about painting the insets (recessed areas) an accent color like red or ice blue (e.g.) Maybe charcoal?
You have lots of options! If you paint them yourself, just make sure you prep the aluminum properly or the paint won't last long. Then a coat of clear over the whole wheel would be best - preferrably a laquer like OEM.
HTH!