Its some heat resisting caliper paint brought from the motor factors in Cheadle (next to the cop shop), they have several colours in....I must admit if I had a blue TF, then yellow would do it for me. Nothing to stop you painting your standard front calipers but I would use a coat of rust treatment first even on new units.
Ap's come up a treat too...
I dropped on a new set of 11 spokes for just over £200, if you look out and bide your time, the deals do come up!
Sundance