The only thing worse was their dull muted recoloring of the Marvel originals. The anonymous kid who colorized the black and white Star Wars Weekly issues I once bought at a curio shop could have done better. 😛
I actually really liked the recoloured versions, though that might simply be because I had those versions as a kid. However, the colours were quite accurate to the movies and at least they didn’t hide the art in dozens of gimmicky effects like the most recent ones did.
https://originaltrilogy.com/topic/The-original-Marvel-Star-Wars-series/id/58853/page/4#1178669
Although I don’t find recolouring comics to be that necessary (generally speaking), if they should try it again in the future, I think a combination of the 1997 and the 2015 version would be the best choice. At least the 2015 version tried to be colourful, while the 1997 version kept the colouring simple and unobtrusive. Something similar to the Dark Horse Classic Star Wars series would probably work best.