Wow those shots look even better than before - bravo!
It's almost worth doing the whole film with those settings, and just re-colouring the title crawl, if need-be. Lest we forget that the opening crawl plus first shot of the SD flying overhead from the GOUT is from a different source to the rest of the film (i.e. the spliced in original pre-episode IV crawl), so it's probably not surprising that portion would be out compared to the rest of the transfer. I doubt Lucasfilm did much - if anything - to match it to the rest of the GOUT, given their track record with this release...