Possibly. If both restorations are 'wrong' in one way or another (and I certainly am starting to get the feeling that that's the case) the early version might give a hint as to what's right in each. As someone noticed, the BD has a lot of the same colors as the unrestored, but does differ. Looking at my tape (with the grain of salt given an EP recording off cable of course though you've got to love 80s well built tapes), the 97's green glow in the bewitching scene is exactly like the 80s version. Wouldn't be the first time I've heard of a restoration program assuming an intentional glow is wrong and removing it.

The odd thing to consider is that the 87 was likely from a print so it's likely the colors are somewhat off (just reading these threads paints what a can of worms this is when you start comparing sources, formats, and so on) while the BD was supposedly from the negative(with unknown amount of color correction applied). The other thing I never got was that in all the articles it's mentioned that it was filmed on three-strip technicolor which can't fade since it's actually black and white to my understanding. So why did it even need color correction? I'm sure I'm missing something there.

That would be an interesting find if true. Even if it can't be established which is more accurate, it might be nice to see what the BD in the 87 or 97/03 colors looks like for those that prefer them.