Halfords do Plastikote bright red which is a good enough colour match for a quick blowover from an aerosol...if you use the laquer as well it's quite a good finish.
I sprayed up a spare ST nosecone with it, just as a quick flash over to see how the colour compared, and it was a better match than a professional match from the paint factors using ppg paint codes (ducati's oem paint supplier)