Are you saying that is just an artistic choice? A weird one, in such case (or maybe as I said, they wanted to do a change and then forgot to readjust the definitive texture, I dunno). I mean, as I said, the game looks great and I'm very happy for the developers, but why can't we notice a small downgrade (as well as an upgrade in other aspects, as some people have spotted, too)?
I agree that some changes in the colours used or some changes in the assets are an artistic choice, but there are slight changes such as these, or in lighting and post-processing effects that don't seem just an artistic change.