Any thoughts on these? They're available at 4k but even if you don't have that they are notably better quality than the Blu-ray. Granted, there's the "Maclunky" in ANH, but the film's color looks a lot more natural than the blu-ray (Which I think overpolished things a bit too much and had a slightly purpleish tint), and of course the green lightsaber thing on the millenium falcon has been fixed. It looks a lot more like the fan "Color correction" videos you might have seen on youtube (Not that fan made is a bad thing, just saying it matches more what was intended with the film's color).
ROTJ's transfer also fixes an issue that I had with the blu-ray. On the 2011 release pretty much the whole Shuttle Tydirium sequence up to the beginning of the speeder bike seems kind of weirdly soft and out of focus (I think others have noticed this too). The Disney+ fixes this pretty much. Color for the Executor seems to be correctly too, a lot of transfers give too much of a blue tint when it's more of a grey with the lights really only being blue.