A variety from the American Southwest,  Colorado River Beans have beautiful reddish brown speckles on tan. The bush habit makes them easy to grow and they seem to adapt to a variety of climates. (you may get a few half-runners) They are slightly smaller than a pinto bean but I think the flavor is sweeter and more nutty.  60+ seeds per packet. Roughly 90 days to maturity. 
(no international sales)