Oppenheimer’s black and white versus color views fully explained by Christopher Nolan -TGN

Director Christopher Nolan explains the difference between the colored and monochromatic series Oppenheimer. While Cillian Murphy plays the titular character as J. Robert Oppenheimer, the film features an array of supporting players, including Robert Downey Jr. as Lewis Strauss. His involvement in the film is integral to Nolan’s decision to create a split color palette for the film.