It wouldn't surprise me if they did correct the colors, although, I don't have an issue with them as they stand today on the DVDs...but I know they are incorrect.
As for the argument, I think people are wasting their time on this debate. It's not that he can't (despite what he says in public), he just doesn't want to and I understand his point of view on it. I think it's sad for him to see the original trilogy in their theatrical editions as incomplete work, considering what it gave him. But, from the experience of making them and having to live with those "problems" for thirty years, I understand Lucas' need to fix them. And, I honestly think that when they do eventually hit Blu-Ray, these fixes will be the last.
I'm off the opinion that the Special Editions haven't changed anything about the films...thus, I prefer them. But, I sort of understand the need of film buffs and fans of this series to have the theatrical cuts of the Original Trilogy films.
But, again, I wouldn't hold my breathe unless something has fundamentally changed in Lucas' thinking in the last few years towards the theatrical cuts.
I'm actually more curious about the eventual changes to the Prequels, especially Episode II.