For some things like tips (I think this is what we are talking about) you wouldn't need them to be sprayed metallic black, just black would do. So a spray in sapphire black shouldn't be needed. I haven't seen the 50i tips in person but will look closely when I do.

The reflectors are a pain to change out (thats why I havent done it yet) but you should consider the painted/same body color ones. Others have performed the change out (DaRipper) and it looks the best.