"Indian corn"

Sure. Indian corn is just varieties of maize that have variably colored kernels. The “Indian corn” that is used for decorations in the fall has been dried. But, if you eat it while it is still young and fresh, it is perfectly edible. However, most varieties of this type of maize have not been bred for the higher sugar content that most of us are familiar with in sweet corn, so it would probably taste quite bland. Marketing studies show that consumers seem to prefer food that is more consistent in color, so most varieties of the maize that ends up on our dinner table have been bred so that all the kernels have the same, nice yellow or white color.