Blackcricket - I don't like to make observations horse's colors off of one picture, and wouldn't say more on the one you posted other than he is a buckskin. The best way to say for sure what color a horse is outside of testing is to have many pictures over the course of a year and in different lights. This is to see the coat in winter and summer as well as low and high lights. Most horses though, do not need that many pictures to get an idea of their true color.
To see the pony in question >> Star the horse