If you go to a horse's page, the color info is just under the horse's name, to the right:
ASPC - 134488A GEORGETOWN'S TOM CAT (HOF)
Sex: STALLION Color: BLACK PINTO
Height: Mane & Tail: MIXED M/ WHITE T
Date Foaled: 05/12/1980 Markings (1): IRREGULAR STAR, STRIP & SNIP;
Date Registered: 12/31/1982 Markings (2): FOUR STOCKINGS;