If you are looking for a specific  Australian Shepherd colorsthen you may have to spend some time to find it.  They come in only black and red as the main color.  So, you don’t have a lot of choices but if you are really set on getting a specific color, you can if you invest the time it may required for you to find the exact on that you want.  Since there are only two basic colors available you may be limited in what you can get.