I like your set up, how are the tires holding up? I am running a 05 dually with MKW 19.5 wheels and Cooper tires, got the truck that way. If I had to pay for the set up I would not get the Cooper tires again. Every time you hit a pot hole or the curb (I know my fault) I loose a chunk out of the sidewall. When loaded with my Lance 11.6 and a 24' cabin cruiser I would not want anything else under me but unloaded, holly crap what a ride.
Just switched to my winter stock rims and Toyo all terrains and it is like driving a Cadillac but I won't pull my entire set up with those. Nice thing about the MKW's is that I can rotate all six tires, cost a bit more but I think it is worth it.
You have a nice set up there and painting the wheels black is an option, I might powder coat my MKW's while they are of the truck this winter. But it is your choice and it looks good as is, enjoy.
Thanks T