Buckskin is one copy of the cream dilution (CR) on bay or brown. The cream dilution mutation is found on the MATP gene. Cream is an incomplete dominant, meaning it cannot skip generations and one copy of cream looks different than two copies. Cream lightens the body on buckskins, but not the points leaving them with black legs and black manes and tails. Buckskins can have white streaks called frosting in their manes and tails. Buckskins have dark skin and dark eyes. Buckskins can fade in the sun, and so that their points are not completely black. Buckskin foals legs are not black until they shed the foal coat. There is a genetic test for the cream dilution.

Wild buckskin is one copy of the cream dilution on wild bay. The legs of wild buckskins are noticeably shorter or are barely present. Wild bay/buckskin has been found to not be genetic.

Buckskin and dun are sometimes used interchangeably or mistaken for one another; this is incorrect as they are two different dilutions. A buckskin with a dorsal stripe or other primitive markings does not necessarily mean that it is a dun as Non-Dun1 can cause them. Dun is not found in Chincoteague Ponies.

It is not known when the cream dilution was first introduced into Chincoteagues. The palomino Misty was foaled in 1946 so it would have been at some point prior to that year. It may have existed early in the breed as there are a few accounts describing ponies as dun. Dun is traditionally used to describe buckskins and the term is still used today in parts of Europe. A 1891 article in the New York City newspaper The Sun stated that the ponies "are most frequently black, gray, sorrel, or dun." Additionally the 1910 Pittsburgh Times stated that "White and dun-colored ponies are exceedingly rare." A 1923 St. Petersburg Times article described the ponies as "bay, gray, dun, black, and sorrel". Conversely Leonard D. Sale wrote in 1896 in The Horse Review of Chicago that, "I have never yet seen a grey, piebald, dun, or yellow purely bred island pony."

Solid buckskin. Copper Moose, 2005, Picture by Amanda Geci.

Buckskin tobiano. Tornado's Legacy, 2014, Picture by Amanda Geci.

Sooty brown buckskin tobiano. Moonlight Tornado, Picture courtesy of Debbie Ober.

Buckskin mare and foal. Mare has frosting in her mane. Feral mare and foal, Picture from The Chincoteague Pony by Charlotte Wilcox.

Light solid buckskin with a little frosting in her mane. Salt Water Taffee, 2007, Picture by Amanda Geci.

Light buckskin tobiano. Glacier, 2007, Picture by Amanda Geci.

Buckskin winter foal coat with mane frosting. Sunrise Ocean Tides, 2016, Picture by Amanda Geci.

Wild buckskin. Her legs are not completely black. Kachina Grand Star, 2011, Picture by Amanda Geci.

Solid buckskin foal in foal coat. Colt out of Living Legend, 2007, Picture by Amanda Geci.

Sooty buckskin. Gunner's Moon, 2003, Picture by Amanda Geci.

Sooty buckskin. Zebe Beebe Bella, 2010, Picture by Amanda Geci.

Light buckskin tobiano. She has no black on her legs due to her having white legs from tobiano. Honey Two, Picture courtesy of the National Chincoteague Pony Association.

Dappled dark buckskin. Poco Latte PW, 2014, Picture by Amanda Geci.

Buckskin minimal tobiano. Martha, 2014, Picture by Amanda Geci.