Ive tried to replicate the carbon ceramic disks before, i had some pretty good success with:
Paint photoetched part Tamiya Light Gun Metal spray (lightly) then get a sharp scapel blade and sratch away areas in a random pattern to reveal the shinney metal, then use Tamiya smoke (paint) & use a thin tipped brush to again make a random pattern around the entire disk. Just a small tip, it worked pretty well. If you ever get to see a ceramic disk close up like on an Enzo it looks very badly mixed together parts are shinny, black, greys & cracked. It hardly looks expensive!!! This is manily for Road cars, a lot of race cars use full ceramic disks.
Beautiful colour choice!!! I had a 430 Scud drive past me the other day, Damn they are sexy, so loud & was spitting & backfiring like a race car. God i want one!!!