Waka Waka Dream

A few weeks ago I had a dream conversation with some friends. We were wondering why dreams can be so weird, some dreams are understandable, while some completely make no sense.  Some seem lifelike, while others just really boggle your mind. Sometimes I've had dreams that have no words, like a silent movie that has no meaning. Isn't it crazy how our subconscious can tell us things through our dreams?
Do you dream in black and white or in color?