Fix SpriteBuilder colors to work with the float CCColor changes.

Requires my cocos2d pull request, this commit:
https://github.com/andykorth/cocos2d-iphone/commit/59ee7c090e433cabee1312b1128e8188f04d19b6

Added some convenience methods to create NSColors from CCColors. 

The random colors in SpriteBuilder were because it was dumping CGFloats (doubles on Mac) into floats. (Which was a change on the CCColor side of things.