Kidney beans come in a variety of colors, including reddish-brown and black. Kidney Shaped Pulses, as the name implies, are kidney-shaped pulses. Their flesh is creamy and silky. These beans are used in mixed bean salads, stews, and polished red kidney beans (Rajma) are used in simmered meals, and these beans have a good ability to absorb the tastes of spice and other foods cooked with them.