While the range of shade in bay duns can vary from pale yellow-tan to a rich, nearly bay looking yellow-toned-red, we've used examples of the most commonly seen shades here. The top left example of a bay dun is a very classic example of a shade often referred to as peanut butter dun. His coat is a yellow-tan with pale red tones. The example on the right is also a very common shade of bay dun. This mare coat is still a yellow-tan tone, but with richer red tones. Many bay duns may darken, showing richer red tones, in different seasonal coats, then lighten in other seasons to a more classic peanut butter shade.

Our two golden buckskin examples have coats that display the classic orange-gold tones of a typical golden buckskin. They lack the red tones generally seen in the coats of a bay dun.

While the dun gene dilutes red (as well as black), it does not dilute it the same as the cream gene. The cream gene dilutes red to a creamy-yellow or orange-gold, depending on the base coat shade. While the dun gene dilutes the red to more of a yellow-tan or peachy-yellow depending on the base coat shade and other modifiers, leaving pale red tones in the coat.