_,,,^..^,,,_ said:

I agree with You_Too; the Mondo BD seems to have the better balanced color grading.

Here you are my attempt of color regrading the 4K using the Mondo as color reference:

Original Mondo BD

ColourMatch'ed 4K

(full res: http://s17.postimg.org/ugli3ajjh/GBU_4k_Colour_Match_RGB.jpg)

Of course, final quality is not so high due to the fact that I used only screenshots; I'd like to test it with some test footage taken from both 4K and Mondo BDs...

Still thinking all of these color regrading discussion merit its own thread!

The mondo release looks nice undoubtedly but that doesn't change the fact that it has a blanket orange tint over the whole transfer, even turning night scenes orange. That's not really my cup of tea. I love the orangy fleshtones though, I think it really works for this film, which it why i've tried to get a similar look to the fleshtones on my regrade.

You planning to give recreating the mondo release colour timing using the 4k remaster a shot Andrea?