how are yours holding up and what paint did you use? ive considered doing this but i just wanted it to last and figured a rattle can wouldnt last that long..
Mine held up great for the year and a half I had them, and were still looking good when I saw them for sale again on craigslist earlier this year. I just washed them real good with some purple power degreaser, using a scotchbrite pad to scuff/clean them at the same time, rinsed, and let dry. I taped off the conical lug seats as I didn't want any paint in there affecting the lugs when I torque them down. Then I sprayed a coat of bulldog adhesion promoter, a few coats of gray primer, and finished it up with a few coats of semi-gloss black tractor and implement paint from Tractor Supply (Valspar brand I believe). I prefered the semi-gloss rather than flat black, as it gives a nice matte finish, but doesn't fade and turn chalky like most flat blacks do.
I can't remember how many cans it took, probably 6-8 of the black and 2-3 of the primer, I just remember it took more than I thought, as you actually waste a decent bit of paint trying to get around all the spokes.
On a side note to the durability of the paint, the spring loaded ball on my impact that is supposed to keep the sockets on is broken, and a 7/8's socket flew off at high speed once, putting a small dent in the soft aluminum of the wheel, but didn't so much as chip the paint.
Here's the only closeups I have of them,
when I sold them: