That, like your eligibility for the Olympics, depends on your age. During the 1940s, studies showed that 75% of Americans reported rarely or never seeing any color in their dreams. Today, those numbers are reversed. One big reason is traced back to our sources of entertainment—we watch TV in HD color, we dream in HD color. In more recent studies, people 25 and younger report never dreaming in black and white, whereas people over 55 reported to dreaming in black and white a quarter of the time, which is linked to childhood exposure to black and white television. The jury’s still out on what childhood exposure to birthday clowns can do to your dreams.