Halfords Very High Temperature Paint is about as close as I've found. You'd have to really look carefully to see the difference in colour to the other engine parts on mine. It really depends on how faded/dirty/old the existing paint is though. A really good, cleaned up keying followed by a couple of coats of primer and then the engine paint. Been on for a year and not flaked or chipped yet.
Halfords Very High Temperature Paint is about as close as I've found. You'd have to really look carefully to see the difference in colour to the other engine parts on mine. It really depends on how faded/dirty/old the existing paint is though. A really good, cleaned up keying followed by a couple of coats of primer and then the engine paint. Been on for a year and not flaked or chipped yet.