This mutation is similar in color to the beige except the Tan/Pastel carry the Ebony gene. Because the ebony gene is present, tans will not have a white belly like the beige, it will be all one color. Pastel and Tans are the same, Pastel is just used to describe the lighter color of a tan chin. Tans will range from very light Pastels to very dark Chocolates. Tans can exist in the Homozygous state, and can also have TOV.