I've used the green from OMC. It's a good product. No warping, cracking, solid color all the way through, etc.
BUT, it clogs abrasives faster than anything I've ever used. It trashed three, 3" sanding drums on my spindle sander doing just one 18" longbow riser. My advice is to do as much shaping with rasps and files as possible if you choose to use it.
Very pleased with the end result though.