Black spokes might be out there but painted rims are about the worst thing you can do , they can hardly can make it through a tire installation. The spokes have to go thru too much abuse during installation I think thats why you never see it. Get a nice strait , trued rim, make sure all the spokes are good and pc the whole thing at once. i have did a few times and it works fine and doesnt crack or chip around the nipples.. They can be recoated if anything ever happened or needs adjusting but that is hardly ever needed..