I worked as a graveyard night watchman for 35 years. (Thats got to be some kind of record.) It seems all my dreams are uncolorfull in gray. In many dreams it seems I am in rual areas kind of laying out in winter snow watching maybe a cabin in the dark or a village. It always seems I am like a scout for a group of people on the move but not really closely accepted as one of them.
In reality I spent uncountable nights of assignments doing similar, guarding classified articles alone nights in remote dessert locations. Also we were occasionaly tried out by a spook to keep us on our toes. I guess a persons job must affect your dreams. I have been retired over a dozzen years now and it seems I have variations of that dream every night!