These are interesting - they are not from a video transfer, they're from film, but they have color oddities all their own - compounded by the color inaccuracies introduced by the card printing process. Not sure if this is accurate to the 1977 color timing anyway...
This is more evidence to suggest that Lucasfilm may have good-condition materials for the original version of the film. Maybe not master materials, but fine-grain/early-generation materials. Would a positive that looked this good in 1994 be faded and unusable now? Is this the same as the source print for the non-SE clips in Empire of Dreams?