I don't see black and white dreams except maybe nightmare, not sure. They could be just dark. I heard few dreams with no vision at all or I think the 'vision' was just the same as having closed eyes.
Sometimes I figure in middle of a dream that I'm "watching a nightmare" and because I don't like it, I just open (half-life) console and type quickly "quit" or "disconnect" before anything screamer like happen, which would "shock" me up. Usually the dream just changes to much calmer one. Sometimes I just hit the 'Pause' button instead, and tap it twice to let the dream go just a little bit forward, so I can see what's coming without facing it, huehue.
I like it when I wake up too early, about to catch sleep again, I just close my eyes and start to visualize things in my mind. Once I was thinking about a pencil (dunno why exactly), first it was just a normal pencil, but after a while it had super detailed textures with shining and stuff, and I could watch it from every 'camera angle' like in map(/model) editors. It would be cool to have such strong imagination while awake, seeing everything you imagine perfectly clear.
As a kid, I often had dreams, where I was thinking "I hope something bad is not gonna happen" and it always happened, it was annoying/nightmarish. I figured that I should hope nothing good to happen, so I could manipulate my dreams the way I wanted. Sadly, after that I only saw one of those dreams.
I have tried lucid dreaming few times, but I always forgot every dream if I try it. If I don't try, I remember my dreams pretty good. I have written some dreams right after waking up to boost the chance of remembering dreams of upcoming nights. Why? Because I like dreams, and I want to remember the dreams where I could do and be anything, something that's not possible in real life. For example, 720 degrees = full turn, fly above forests, move objects like in garry's mod etc. I should take a lesson or two from the ultimate dream master, xepop.