One of Diem Chaus commissioned crayon portraits. Retired crayons for memorials?
  • One of Diem Chau's commissioned crayon portraits. Retired crayons for memorials?
Those are the 13 colors that Crayola has retired throughout its history. Crayonsman posted a photograph of them to Flickr here. The whole Crayola chronology is here.

*Thanks, Jim Demetre!