History of Crayola crayons
Since the introduction of Crayola drawing crayons by Binney & Smith in 1903, more than 200 colors have been produced in a wide variety of assortments. The line has undergone several major revisions, notably in 1935, 1949, 1958, and 1990.
Source: Wikipedia — History of Crayola crayons (CC BY-SA 4.0)