At this point it does seem the color of technicolor prints (I’m pretty sure the 1977 bootleg is also of a technicolor print) does have a green shift when projected as has been argued by many, and any color grading attempting to match these colors should incorporate these anomalies. However, it’s also interesting to estimate what the colors would look like without these anomalies. One thing which helps in this case, is the presence of subtitles, which are supposed to be white, and can thus be used to balance the colors.
Before:
After:
