What 1942 movie was the first one to be colorized by computer?

The Gulf Between (1917) was the first film to use the Technicolor process (process number one). Song of the Flame (1930) is a musical operetta film photographed entirely in Techincolor. It was the first color film to feature a widescreen sequence using a process called Vitascope, the trademark name for Warner Brothers' widescreen process. The film, based on the 1925 Broadway musical of the same name, was nominated for an Oscar for "Best Sound Recording."