Whimsical, Witchy or Just Plain Scary? What's your Halloween decorating style? Orange Halloween lights, along with purple & green are the signature colors of this enchanting season. Combine these vivid colors and they become a unique illuminated backdrop for your wickedly fun Halloween decorations! The most popular Halloween light color combinations include classic purple and orange lights, wickedly witchy purple and green, and the less common but equally fun, blue and green "playful monsters" color palette which is kid approved!