The scans that one website used to have, (taken from the collectible 70mm frames) looked awfully good.
It would be a miracle for a complete 70mm Star Wars print to show up that wasn't turning pink though.
I don't think there are a lot of transfer houses out there that can even handle 70mm. It wasn't even until the early 90's that big format films like 2001 got a decent video transfer, because apparently the proper gear had not been around before that!