Paint/Wallpaper Alternative - American Clay

I LOVE the idea of this - applying plaster (sounds awful but the descriptions sound amazing) to your walls to change a bland boring surface into a warm, slightly textured rich color. They can be tinted any color and come in three finishes: Porcelina which is like marble, reclaimed seashell-based Marittimo, and Loma which can be polished matte (is that an oxymoron?) or more textured. Sounds like a great alternative to ho hum paint and i can only imagine what the sunlight would do to a room coated in a warm buttery shade...