The Wild Horse Dilemma by Bonnie Gruenberg quotes a former Chincoteague resident that due to the decimation of the feral herds after the Ash Wednesday storm of 1962 select mares with good conformation were bred to stallions of other breeds, including Paint.
The black tobiano Paint Horse mare TripleAction Penny is the dam of Chemina Mist and Windjammer sired by the Misty great grandson Cyclone. She's subsequently found in the pedigrees of a number of Misty descendants. Her descendants in the feral herd are WH Windy's Beach Boy, WH Night Rain, WH Summer Breeze, WH Sundance, WH Wildfire, WH Surf and Sun, Winter Moon, CLG Maureen's Misty Moon, CLG Misty's Lunar Eclipse, Miss Holy Smokes, SCC Misty's Sunburst, SCC Misty's Hailstorm, and Wildfire's Phoenix.