It seems like the technicolor print would be the best reference for color.
Here is a pic of the of the next shot in that scene. I would think the color needs to be close to this.
I'm sure you guys have seen all these pics from the technicolor showing last year, but I just ran across them recently and thought they were amazing. I would have loved to have been at this screening. It just makes me furious though, that i probably will never see Star Wars again in this high of quality, and in its original form.