It might be worth giving RS a call and ask them ... they have 17,000 colour for bikes dating back to the 1920's. (scroll up for details) I reckon you'd be very lucky though if someone has matched the disk carriers. The frame, possibly. As for satin black on the engine, surely you'd respray with some hammerite high temp satin black (Halfords). I've just used that on my lads 50cc supermoto exhaust, I'll know i f a few weeks whether it stays on or not. Probably Not!
Henry