We formulated this warmer with the magic of Halloween. Watch as the colors transform from black to blue and reveal adorable ghosts! Yes, that's right, this warmer is color changing! How spook-tacular! Designed to enchant your home during the Halloween season, this "Hey Boo" Pluggable Fragrance Warmer brings a playful spirit to any space. Just plug it in, add your favorite fall wax melt, and let the scents of fall fill the air.