Apparently, researchers have found that people raised with black & white televisions (usually people over 55) dream primarily in black and white, whereas people raised with color TVs are more likely to dream in color.
What’s most interesting to me is that research conducted between 1915 and 1950, shows that before B&W TV, people dreamed in color. So TV was responsible for denying a large group of people colorful dreams.
You can read the article here.