It loses the color of green either washing it towards yellow (like there is a drought) or towards blue (which probably look alien and I don't think I've seen it done). For an example compare the scenes in Hobbiton from Lord of the Rings with similar ones from The Hobbit. From what I remember is those films were heavily graded and just when the blue-orange thing was reaching a sort of common knowledge so it stood out (at least to me) when Hobbiton was washed a "nice" warm yellow color.

I would insert a couple of screenshots here but I don't actually have a copy of The Hobbit to take one from. I am thinking of when Gandalf and Frodo are riding in the cart heading away from the camera to the foot of Bag End and comparing that with Bilbo running after the dwarves when he wakes up alone on the first morning.