 This cartoon was colorized in 1968 by having every other frame traced over  onto a cel.  Each redrawn cel was painted in color and then photographed over  a colored reproduction of each original background.  Needless to say, the  animation quality dropped considerably from the original version with this  method. The cartoon was colorized again in 1995, this time with a computer  adding color to a new print of the original black and white cartoon.  This  preserved the quality of the original animation.  However, for some reason  the final scene in this cartoon is replaced with the final scene from the  previous 1968 "redrawn" version (it is believed that the black and white  print that was used for the computer process must have been damaged at that  point in the film).