The use of color TV images in this film is not an anachronism. The TV station shown is a CBS affiliate, and CBS had already developed a color TV system when this film was made. Their system ultimately failed because it was incompatible - only viewers with a CBS-made color set could receive its broadcasts. The color TV system finally adopted in 1957 was developed by NBC and its broadcasts could be received on black-and-white sets, albeit not in color.