Color plays a huge but 'subtly-there' role in films. They give out the message and intention, the mood and feelings without being obvious. And David Fincher is no exception to manipulating our perception through his conflict-loving palettes.
Best known for his films "Fight Club", "Seven", "The Social Network" and "Gone Girl", the American filmmaker's choice of palettes are often dull-yet-loud-enough. Take note: he would use opposing colors that reflect conflicts both inside and out; he goes monochromatic to echo unbalanced, surprising characters of their austere worldviews; and then discordant colors to draw attention in out-of-place elements to build anticipation.
See them here.
Preview image was taken from the video.