Agreed--there are few things that look better on a Bronc than black wheels. Dunno why--they just do.
Krager Black Soft 8s are cheap. Save your beer money for 2 weeks and you'll have enough to get them. They come with a solid, glossy powdercoating, and are actually made in the United States of America! Despite their low pricetag, they have a pretty tight runout, and are precision made.
The downside to the Kragers over your aluminum wheels is that they are heavy, but they are absolutely bulletproof. The aluminium wheels will give you a little better acceleration and a little better fuel economy due their reduced reciprocating mass and unsprung weight, (about 10 LBS lighter per wheel) but I would not base my decision solely on that. It just depends what you ask your truck to do for you.