The Theatrical 4k Dremastered is basically just a 4k-Upscale without any regrading. There was nothing wrong with the color grading of the Theatrical Bluray.
The Extended 4k Dremastered on the other hand has a different color grading. One, you have not seen on any official home release.
Its somewhere in between the Theatrical Bluray and the Extended Bluray. More nuanced than the theatrical but without the Green tint.