I think it would look good. Somebody posted a thread on here a while back of some photos of a 50's era motorcycle riding club. Seems like the front ends on those bikes were blacked out. I have seen some pictures of some of the Billy Joel retro style bikes and they had quite a bit of black on them. I went in the other direction and chromed mine out so what do I know:
I bet it would look really good but even if you don't like it, black parts are hot right now, you could take them back off, sell them and get most of your money back I would think. Just don't forget to post pics either way.
I was in Wildwood Harley (in NJ).. They were doing a police version Road King, brand new bike for a customer, had it all apart in the shop 2 weeks ago. Maybe someone there would or did take some picts if it's done