Among such designs that were also tested were third jerseys, to break the traditional mold that baseball teams wear white uniforms at home, and gray on the road. This began in 1972 when the A's flamboyant owner, Charles O. Finley, introduced new uniforms to the team. Taking after the lead of the Pittsburgh Pirates, the jerseys were pullover spandex that would later catch on in MLB (though this would be phased out by the early 1990s in favor of the more traditional button-down jerseys), but by going one step further than the Pirates, the A's introduced alternate gold and green jerseys.