Have you considered using kk650’s semi-specialized edition as a base for ESB? I know earlier versions of his work on the OT skewed pretty yellow but the latest 2.6 version looks about as good as a blanket color-correction on ESB will ever look. I don’t think it’s possible to do much better without going shot-by-shot like Adywan.
As an added bonus, all you really need to do on that version is swap out the wampa scene and adywan’s emperor. The rest is already done.