Since earthen plasters are made using local materials homes naturally take on the characteristic of the origin of the earth. This subtle green called "Asagi" is characteristic of the earth plaster walls of Kyoto, where it is often found. #GoodUrbanism means using local materials. 
Earth plasters are by far the most environmentally and people friendly interior wall covering. No chemical adhesives, no off-gassing. Vapor permeable, it allows the wall to breath while providing thermal mass, humidity control, fire protection, and sound insulation.
While difficult to master, earthen plaster is an absolutely forgiving material. Even a barely competent beginner can make a nice wall from materials that are basically free. The better you are, the longer it will last and the nicer the finish. Perfect for families.
