i was reading with my dad last night and he asked me if horses could change color. i told him 'yes some breeds can, like the lipizzaner (born black and whitens with age).' Then he asked me if thoroughbreds could. he showed me a pic of a race horse in his Sports Illustrated that was born grey and ended up chestnut. i said that he must have misread or got confused on which horse they meant in the pic (there were about 4 in the pic).

did he misunderstand? or can thoroughbreds change color?

also this horse looked like a yearling in the pic, so it couldn't have been 'baby fur'.