I would really like to know what the source is for the JP comparisons. Apart from the DNR on the 3D version, which is indeed bad, and the fact it seems very bright, I actually quite like the colors.

A film that I want with the original colors and the original aspect ratio is The Voyage of the Dawn Treader. I don't hate the color on the BD, but I prefer the way the film looks here in the screenshot at the bottom. It's one of the few instances in which I prefer the version that looks more cyan.