kCGColorSpaceModelCMYK
kCGColorSpaceModelDeviceN
kCGColorSpaceModelIndexed
kCGColorSpaceModelLab
kCGColorSpaceModelMonochrome
kCGColorSpaceModelPattern
kCGColorSpaceModelRGB
kCGColorSpaceModelUnknown
kCGRenderingIntentAbsoluteColorimetric
kCGRenderingIntentDefault
kCGRenderingIntentPerceptual
kCGRenderingIntentRelativeColorimetric
kCGRenderingIntentSaturation