I am wondering if there is a difference between colors in the various reprint trades.
You should see what they did to the original Marvel comics in Scandinavia. Not only did they have their own colours, but they even edited the art itself to make it all fit within these big album sized comics.
Some examples of the editing they often did;
2 pages from the restored version of issue #31 “Return to Tatooine” (from the Dark Horse “A LONG TIME AGO” TPB) on the left, and the Norwegian album version from 1982 on the right)
LINK to another example from issue #34 “Thunder in the Stars”
(PS. The movie adaptation of ANH didn’t even bother to make the colours similar, but they did at least never altered the art in any serious way.)