riddler95 said:
Robert Harris would do anything he could to perfectly color correct the Original Theatrical Versions to match exactly how they looked when they were originally released in 1977, 1980, and 1983.
Unlike digital colour record where everything is clearly defined (RGB, HSV etc.), in case of analogue medium (i.e. film) colour is a very complex matter. "How they looked when they were originally released" is big variable and is really impossible to determine.