In Lowry's defense the final color grading was done before it was sent to them and fucked up by Lucas. They were only given a 1080P master to work with its hard to recover detail that is not there, especially when you dvnr the hell out of a 1080 scan. That was not even state of the art in 2004, despite the bs claims of the Lucas folks during the hype of the BD release.

Try that would have been state of the art circa 2001.

And would have been excusable for the dvd format because the sins of the dvnr would not show as bad. To use that same master for the blu rays and not do a new 4k or 8k scan is laughable to say the least.