Madelaine Petsch Courtesy of Madelaine Petsch/Instagram Madeleine Petsch used her copper hair as an accessory with her outfit. Petsch, 30, showed off her cherry cola outfit via Instagram on Wednesday, December 18. While splurging at the Revolve Holiday Shop at The Grove, in Los Angeles. For her Cali-chic moment, the Riverdale alum looked as cool…