Moss and Algae Painting with the WaterColorBot By Lenore Edman on February 20, 2014 Gregg posted on twitter: WaterColorBot experiments: moss+yogurt and algae+iron paint. With William Jennings. We’ll be looking forward to seeing followups on these experiments! This entry was posted in Art, Science, WaterColorBot and tagged art, watercolorbot. Bookmark the Permalink.