Coloring Book is the fourth extended play by the American post-hardcore band Glassjaw, self-released on February 13, 2011. The release was initially exclusively given away for free during the group's February–March 2011 tour, and was said to serve as a preview for Glassjaw's upcoming third studio album.[6][7] The EP was later made available on Glassjaw's webstore on September 15, 2012, packaged in a red gatefold sleeve along with a pink-colored DVD, Coloring Book: Live at the Forum.[8]
A limited edition 12" vinyl pressing of the EP was released on August 13, 2013. Each disc is unique in that they were made up of three rings, each in different colors, thus meaning no two copies are the same. The 12" edition was limited to 120 pieces.[9]