Ups! Sorry, zoozoom was busy and forgot to answer.
There is a lot to find on the net about dreams. I am sure you are not interested in a scientific explanation of dreams, which I couldn't give you either, but in the real meaning/use of dreams. I can mainly talk out of own experience as my dreams are mostly in color too. These dreams are not the usual human dreams, but astral travels visions or cognitions. Some of them are even sent by the Ellies as hints for things that need to be done. Others are travels or cognitions with one of our bodies to which we connect unconsciously.
Do you want to tell me about the dreams? You can even send PN if you want, as I will probably need some details. It's up to you.