I would do those if the rest is good, to me they are letting the rest down now, the exhaust is an absolute must do on a regular basis...you just can get those any longer...you probably know this but Plast-kote BBQ (from wilkinsons) is the stuff to use but it's best cured if you are able to do that
Plasti kote BBQ paint
My swingarm, I did this earlier this year just with rattle can...better than original with zinc primer, original didnt have any primer at all to my knowlege!
The best paitn job I saw in blue was the one forum member ventura had done, it really was a cracking job...look for his posts here
up to you though