Some people dream in black and white
The older generation often dream in black and white. Over-55s dream in black and white about a quarter of the time, but only if they had black and white televisions when they were kids.
The study shows that watching films as a child has a strong and lasting impact on the part of the brain that forms dreams.
https://www.newscientist.com/article/dn14959-its-black-and-white-tv-influences-your-dreams/
