They would turn to goop in a PC oven...and they aren't metal... and just no
Paint with a flex additive for custom colors, but IMO if you're just going black its cheaper and MUCH easier to restore yours, or buy them. Want matte? Sand with 240-320-500-800-1000. Gloss? Finish with 1500-2000, compound, polish, wax.
https://www.buellxb.com/forum/showth...cratch-removal
BuellyBagger is the resident paint pro, and does killer work. Maybe he'll chime in?