Sets Color LUT source. If ColorMapType is "Color LUT", then source will be blended with passthrough using folowing formula: Result = ColorLUTSource * LutWeight + Passthrough * (1 - LutWeight ) If ColorMapType is "Interpolated Color LUT", then source will be blended with color LUT target using folowing formula: Result = ColorLUTSource * ( 1 - LutWeight ) + ColorLUTTarget * LutWeight