Maybe paint them then have them lightly sandblasted from about 6 feet away after the paint cures?
I'm sure there are guys here who have done faux patina and will have other suggestions.
Some I've seen some faux patina jobs that look like crap, to put it mildly.

Let us know how they turn out and how you did it.

Last edited by klhansen; 08/01/2020 6:11 PM.
Kevin
1951 Chevy 3100 work truck
Follow this saga in Project Journal
Photos
1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.