BiggRed got good reviews but I found they were hopeless, they sold me a set of rear slider pins for my Mk3 Mx5 and they totally didn't fit, then they didn't reply to my message saying they were the wrong fitment, and still continue to sell the wrong parts on ebay! One chap on Pistonheads found exactly the same having bought from their website, and they didn't respond to him either. Put me right off them frankly, £15 quid down the drain...
The place Gibbo used to get his calipers painted green did a great job, I'd be looking at using them personally looking at how good a job they did.
Godspeed brakes may also be worth a try.