yotsuya said:

the core issues with ANH stem from the condition of the negative and how it was scanned, not what Lucasfilm did after that.

Could you go into more detail about how the scanning method is thought to be a major source of the problems for the 2004 transfer?

Also, the secrethistoryofstarwars article also suggests Lucas was indeed responsible for the color of the 2004+ editions. I had not read before that Lowry didn't actually do the color for Empire or Jedi. Though, I cannot seem to find Matt Hurwitz's article in Videography that is used as a source for all this.