I’d also love to have a somewhat de-tealed version of the two, especially Batman Returns, which from the print stills does have teal in it, but should also lean deep blue, sometimes bordering on slightly purple.

The flat open matte first trailer posted might serve as a good reference (and it features alternate shots and stuff you shouldn’t be seeing).
https://www.youtube.com/watch?v=dAvlA73XNUE

Also the final theatrical trailer: https://www.youtube.com/watch?v=NOLQfvp4aYI&list=PLDRH8owssg8H0YToSKVBIvg0qWaFAiB9l

So it seems the home releases prior to the 4K were turned a bit too neutral in its grade.

I believe Warner Bros 35mm negative scan was leaked on a russian site (Rutsacker?) and that the master is before the clean-up and regrade. I only saw stills of this, though.