I did the same kind of thing and I think they look bad-arse. I took my stock jk 18" sahara rims, took off all of the original factory coating with a 3M scouring pad on a drill then a dremel for the fine details. After I did this, I cleaned the wheels with solvent twice, masked them, and then sprayed them with about 6-7 light coats of self acid etching auto primer (I picked up some black stuff from NAPA's paint branch in the NE just off Barlow). After I let that dry, I did about 6 light coats of Rustoleum Hammered Metal Black paint. The colour is more of a dark dark dark dark titanium rather than jet black. The cool thing about the hammered metal finish is that with its microtexture in the paint, when you scratch the wheels up you can just re-touch it up and the texturization hides the scratch. With a Matte or gloss finish the scratch would still be visible. The paint REALLY stays on well. I use a 3000 psi pressure washer on them about once per week (takes about 1500 psi to cut skin) and there have been no issues. All in all it cost about $50 and took a solid weekend's work. I'm glad I did it though. The key is in the prep for sure. If you do a bad prep or just spray it on overtop of the factory coating, it will just peel off and look like Poo.