They have short , woolly fur , usually reddish-brown in color , a gray-brown face , yellow-colored cheeks and feet ; pale stomachs , long , golden-brown tails , and two golden stripes on their backsides . Goodfellow 's Tree-kangaroo has short , woolly fur , usually chestnut to red-brown in color , a gray-brown face , yellow-colored cheeks and feet ; a pale belly , a long , golden brown tail , and two golden stripes on its backside .