In the documentary Dark Days the sounds are what really make it real. The constant changing between silence of the underground, the intensity of the subway flying through, and the voices of those who live underground. The silence to me was the most disturbing; I couldn't live in such a quiet place of darkness, never know what was lurking, or as was shown in some scenes crawling. The silence was often broken by the, in my opinion, too loudly recorded subway or sometimes by the voices behind the sad stories of those that dwell underneath the ground.
The documentary was shot in black in white, which for me did nothing because I struggle to watch black and white movies. However, I do believe that it added to the idea of the documentary because they lived in the dark color doesn't really exist and everything about their lives was so routine and in a sense black and white. The black and white also help to create the very somber mood that seemed to dwell in the underground.
Most of the people depicted in the documentary were filmed in conversation instead an interview style. Therefor the audience feels as if they are getting to know the people through real life interactions instead of through an interview where the person could answer the questions according to how they wanted to be perceived instead of as they truly are.