Harmy said:
I'm not sure how well preserved are the colours on Puggo's 16mm prints of ESB and ROTJ but those could in theory serve as a reference.
They are vibrant and not faded at all. But as with all telecines, capturing the color accurately and completely is also a challenge. What I can say is that PSB will capture the breadth of color sufficiently so that someone could use it as a reference, adjusting for variations in white balance and hue.