^ That's what happens when you hire Lousy Digital to do your restoration work for you :)
Although with that said I would probably advocate that process be done on the crest of Vaders Helmet in the shots mysycamore posted to stop Vader looking super imposed and sort out the lighting issues.
Shame they could not darken where it was actually needed but also overblow shots way beyond what they were originally intended to be. It's actually quite a basic thing brightness and contrast and they failed miserably on probably one of the most basic processes to getting film to look the same throughout.
The Brightness and contrast leaps around willy nilly as does color saturation levels between stock transfer of GOUT and SE.
It's all over the place. And what makes it worse is you have multiple layers in the Star wars which possibly never conformed to one another in the first place. Each need there own separate handling for instance foreground and background then for any additional overlays like Lightsabers or Flashes or what not need to be re-done as cherry's on top as they don't conform to any reality of film in so much as these go on last and are not lumped in with the footage. It's not that complicated but it is much more work than a standard restoration.
Here's that Lighting Fix... I would not be opposed to some revisionism there...
Same fix done to Gout... Gout looks superior. The Special edition manages to make him look more super imposed even with the lighting fix to his helmet just in general his whole body looks like he has been stuck on there.
Both the Brightness and the contrast on the special edition version have been drastically reduced giving him this super imposed look. That is the main problem. Here is the special edition matched to the gouts brightness and contrast with a bit of color correction this is what I think it should look like or something like this. THere is also the problem of the cyan light which is a bad choice considering he is not surrounded by cyan lights. and the color light does not match the background.
Basically I think he has been recomposited on this shot because you cannot get him to settle in to the background without altering him separately. There is also the circular hole under his chin where we can see through his head out the other side to a piece of the background