Thanks for the kind words, I am truly happy that I was able to provide this to fellow fans :-)
The R2 canyon scene will be slightly brighter than in the SE but not as bright as on the GOUT as all evidence seems to point towards that being a 1993 colour-timing error.
As to the red sky, I'm not quite sure yet. I will definitely not be putting back most of the sky backgrounds where they were replaced (as the quality of the GOUT is mostly pretty bad and the difference isn't usually so big) but this one is quite a considerable alteration to the mood of the scene, so I'll have to test it out first.