I've been thinking about painting the cement that goes around the side and back of my house. Paint that goes into concrete after it's set is impossible to get out.
Don't ask me how I know.
It would sure cheer up the place, I think that green swirls with white blotches would match my white with green trimmings house. And there is a cement sealer for paint when the right pattern is on it.
I remember a very nice decorating show, Christopher Lowell who did that. It was very pretty.