I have always thought my Mom-in-law's gelding was a dark bay. His mother is a bay and his father was a black and white tobiano paint. I have noticed horses on the color forum that look very similar to him being called a brownskin. He is a pretty shimmery gold on his belly and there is a black that fades from his back. He does have black legs. He turns such a dark brown in the winter that he almost looks black, and his nose turns brown. I attached two pics (altho the winter pic is about 2years old), and the summer coat (is actually his spring coat, and it's not a very good picture, his belly turns lighter than that...). What do you think?
Brownskin is a brown horse with one cream gene. Buckskin is a bay horse with one cream gene.
Brown and bay are variations of the same gene, so they share similar traits. Brown will tend to be more seasonal - darker in winter, bay mimicking in summer. Brown has paler "soft" points - the muzzle, behind the eyes, inside the legs, in the flank, the elbow, and often under the tail.
No. It used to be thought of as a sooty buckskin, but since the discovery that brown is a separate gene a lot of buckskins that were thought to be sooty are actually brown based and "black horses with pangare" are actually browns.