"Gentle" hallucinations

I'm not sure what else to call them, but does anyone else experience mild hallucinations of their scenery? When I'm zoning out or have my eyes closed, I can see the background and scenery change. It seems relatively random, sometimes I'll be in a rainforest, sometimes it'll be the room I'm in but it has dots or stripes of different colors. It doesnt seem to be related to either depression or mania, and it's never been scary or harmful.