I had a unique chance to see a 70mm magnetic print this past year. To my eyes, the image looked a lot like the THX laserdisc in terms of color to my eyes, but it was free of any digital enhancement and grain reduction. It looked like a 1990s film, which is to say, great.
http://forum.lddb.com/viewtopic.php?f=41&t=2338
Which of the two laserdisc pictures on this page is the one you’re talking about? (if either)