I never notice. Or I can never remember. I think they might all look like 1940s black and white noir films. What I remember most in my dreams are moods or what I'm feeling at the time depending on the scenario. I used to have a recurring dream of shooting pool when I first started playing and can never recall seeing the balls in color. I just recall images and emotions. I absolutely love my dreams [even the bad ones are appreciated] but Kodachrome/Technicolor would sure be a nice add-on.