Chestnut Horse has light brown hair with a white stripe down the middle of her fringe, a blonde ponytail and a red bridle-like headband. Her eyes are brown with rectangular pupils. She wears a brown crop top trimmed with light yellow, which has an orange Japari symbol (green JRA logo during the collaboration) and detached sleeves with a white edge at the bottom. Her horse tail is the same blonde seen in her hair. She holds a white cloth with the same Japari symbol on it (same JRA logo during the collaboration) and wears brown and white socks that reach her knees, and white sneakers with golden toes.
In Real Life
Also known as sorrel, chestnut is the most recessive equine color. Different shades of chestnut may be given different names in different parts of the world or in different breeds, but since every red horse has the same genetic makeup, we will stick to one term: Chestnut.
Every chestnut has these two genes: ee. This allele of the Extension gene makes the horse produce red pigments, instead of black (E produces black). All chestnuts are homozygous-- they have two e genes. This is why a chestnut crossed with a chestnut will always produce a chestnut.
Since this basic rule is understood by almost all breed associations, non-chestnut foals from two chestnut parents are not given recognition... it's obvious someone was mistaken as to the foal's parents, or one of the parents was misidentified as a chestnut. While breeding two chestnuts always produces chestnuts, this is not the only way to produce a chestnut horse. Other colors, such as bay, black, palomino, buckskin, and brown, can also produce Chestnut foals.
There is one very rare exception to the chestnut x chestnut rule... theoretically, two chestnuts can produce a white if both parents carry the sabino-white gene. This gene is seen in solid horses and only shows through as facial or leg markings. However, this is not really an exception, because the white foal will still be a chestnut, only he will have the white gene masking his chestnut color.
The shade of chestnut is also influenced by the F gene (flaxen), which makes the horse's mane and tail ligher, and may lighten the legs or entire body. The Pangarè gene will also lighten a chestnut's muzzle/flanks. The Sty (sooty) gene may scatter dark hairs throughout the horse, making him darker, giving him dapples, or seasonally changing him to a false liver chestnut.