Sweet candy-corn! How I do love the colors black and orange! They are my favorite color combination of all time! Did you know that black and orange are the traditional colors of Halloween? Duh-oh! Say it isn't so! Anyhoo, in modern Halloween images and products, purple, green and red are also prominent. The use of these colors is largely a result of holiday advertising dating back over a century, and tends to be associated with various aspects of Halloween tradition. ^_^
Learn more about Halloween symbolism at http://www.history.com/minisite.do?content_type=Minisite_Generic&content_type_id=56058&display_order=11&mini_id=1076.