Monsters, Inc. is about a loveable monster named Sulley and his sidekick Mike Wazowski who have to scare children in order to power the city of Monstropolis, but things get a little crazy when a little girl named Boo wanders into their world. Celia is a one eyed purple monster with five snakes for hair. Color Celia or one of the other Monsters, Inc. coloring pages in this section. Decorate your design online with the interactive coloring machine or print to color at home. Discover a kingdom of Disney coloring pages and fun activities for you to enjoy from Hellokids.