Monsters are mysterious creatures, known for eating the strangest things. A famous one with a sweet tooth fills his belly with cookies. Monsters from the Iowa Children’s Museum, however, are filling their bellies with toys, reused materials and whatever else they can find in their specific color, so their insides match their outsides.The first three color-coded monsters are on display in Johnson County, with three more planned to eventually fan out around the area, including Cedar Rapids.They’re part of the children’s museum’s “Eye See ’Em!