Reveal a rainbow of colors on every page with Bendon's Blue's Clues Imagine Ink Magic Pictures! This patented technology magically reveals a rainbow of colors with just one Magic Ink marker. Your little artist will love finding favorite characters, and you'll love the magic of mess-free coloring. Imagine Ink markers are non-toxic and invisible on most household surfaces. This is an official Nickelodeon licensed product that is ideal for children ages 3 years and older.