Chestnut, mane and tail variations are a reddish color to light flaxen color. Tail Ribbon is Yellow with Red Crisscross. Sold as #94 from 1964-1980. One noticeable variation is a white tail ribbon with red crisscross (found in box with 1980 catalog) - unknown how common that was.
Models were released as #94C through various mail order companies 1982-1985, and released as 94CH through various mail order companies 1986-1987. 94CH was sold along with 94BL Black Belgian, 94BY Bay Belgian, 94GR Dapple Grey Belgian and 94SM Blue Smoke Appaloosa Belgian, and could be purchased separately or with the set. There appears to be no notable differences in these releases.