Cinematography ruined by green filter
Some shots have an orange teal tint to them, which looks off as well, but it mostly affects the faces, which isn't too bad. The green filter, on the other hand, drowns out every detail and destroys contrast as much as composition of the whole scene. The beach scenes in particular suffer greatly from the muddy green tint plastered all over. By contrast, the very few scenes which neither have the green nor the orange teal filter look fantastic, with rich colours, great detail, and stunning contrast.
It's a mystery to me how a movie with a focus on cinematography could drop the ball in terms of colour grading this hard. I've heard that Nolan is red/green blind, so maybe he didn't even notice? Anyway, a non-graded version of Dunkirk would be a very welcome release.