Agence France-Presse: New York’s Great White Way turned a shade greener Tuesday as Broadway announced plans for making theaters more environmentally sound. Skip related content Broadway leaders joined Mayor Michael Bloomberg at the Eugene O’Neill Theater to commit to wider efforts meant to reduce the city’s carbon footprint by a third over two decades, the mayor’s office said. Switching light bulbs in the dazzling street displays, recycling stage scenery, and washing costumes in cold water are some …