Wait, is O Brother on Blu screwed up?! I didn’t know, it’s been ages since I watched it…
It’s got a whole new grade. Deakins supervised it and it looks good (and I think suites the photography better), but it has less of an aggressive sepia tone on the landscape, which is what O Brother was known for, being one of the first films graded entirely with a DI. It’s definitively worth preserving the DVD’s colors.