"According to his website, Mel Birnkrant (creative director of Colorforms) stated that the circular pieces of the set used to make faces became grey and black from an insistant CTW watchdog."@en . . . "According to his website, Mel Birnkrant (creative director of Colorforms) stated that the circular pieces of the set used to make faces became grey and black from an insistant CTW watchdog."@en . "Shapes and Colors"@en .