Green, red, kidney, lima or soy are a few of the different kinds of beans recognized on National Bean Day, January 6th. Celebrating the bean in all sizes, shapes & colors. We’ve been cultivating beans (legumes) since the early seventh millennium BC. And beans provide a significant source of protein, an exceptionally healthy meal & snack choice & supply an excellent source of fiber, low in fat & high in complex carbohydrates, folate & iron. Approximately 40,000 bean varieties in the world. Black beans.