Hi Mal
Great looking Corsair. As you correctly stated, USS Bunker Hill had Ms21 camouflage scheme when commissioned in 1943. This is a good website:
http://www.shipcamouflage.com/usn_cv.htm
One thing you should note about the carrier deck was also stained blue. It was called Flight deck stain 21 and was similar to Deck Blue 20-B, but the shade of blue was a bit lighter.
From what I've read and seen on Essex class carriers, because of aircraft landing on the deck, the stain would wear away and the natural wood deck would be exposed over time.
Some photos here of Bunker Hill: http://www.navsource.org/archives/02/17.htm
I'm sure there are other photos on the web...
regards
Bruce