This is a pretty cool form of “alternative graffiti.” It’s not quite reverse graffiti (unless you want to take down cities completely), it’s not quite something that GRL will do, it’s natural graffiti. Moss graffiti is something that it apparently very easy to make with little more than some moss and a can of beer, and it looks awesome. Becki Fuller has a photo of the stuff in New York, and Stories from Space has instructions on making your own.
