Poster paste
I found this idea in photographer Patric Johansson's portfolio. Love the idea of pasting posters to the wall and tearing them back to achieve this look. The limited colour palette is striking too. Can't wallpaper your walls with posters in your home? Think about doing this on a large piece of foam core board or similar and prop against the wall or behind a desk. (Removable adhesive strips would work with the lightweight board as well.)