Miscellaneous - Clean up, TexParams, Replace Create factory methods with constructors - CCLayerColor

Hopefully:  https://github.com/mono/cocos2d-xna/issues/59 and https://github.com/mono/cocos2d-xna/issues/71

CCLayerColor
https://github.com/mono/cocos2d-xna/issues/72

CCBValue
https://github.com/mono/cocos2d-xna/issues/69