Are kidney beans good for turtles?

According to Turtle care sites, it depends on what kind of a turtle you have. Obviously if the turtle is carnivorous then the major part of it's diet should include lean mean and eggs. However if the animal is omnivorous then some sites recommends that you can feed them leafy greens (other than rhubarb, avocado, poison ivy as well as avoiding milk products or canned / processed foods), beans, sweet potatoes, corn, carrots, squash, Okra, beets and peas.