I've been thinking about doing the same to my bike. I have a glass bead blaster (like a sand blaster but with tiny glass balls) where I work and I am going to use it on a few parts before I paint them.
You could sand them just to take down the gloss or you could check around, some paint or powdercoating shops may sandblast a few small pieces for you at a minimal cost or maybe for free if they can do them while blasting other stuff? Post some pics after so I can get a preview of mine? I am going to wait until winter to paint mine.
Good luck.
