Paint by number
（重定向自Painting by numbers）
![Last Supper 2011 paint-by-number image](/Images/godic/202502/01/Last_Supper_20111412.jpg")
![Employees from the Voyager Telecommunications Section, too anxious to wait for the first official processed image from Mars, attached strips side by side to a display panel and hand colored the numbers like a paint-by-numbers picture.](/Images/godic/202502/01/First_Image_from_Mariner_4_-_GPN-2003-000601412.jpg")
Paint by number (or painting by numbers) describes kits having a board on which light blue or gray lines indicate areas to paint, each area having a number and a corresponding numbered paint to use. The kits were invented, developed and marketed in 1950 by Max S. Klein, an engineer and owner of the Palmer Paint Company of Detroit, Michigan, and Dan Robbins, a commercial artist.