Although it has been assumed that Betty’s first name was established in the 1931 Screen Songs cartoon, Betty Co-ed, this “Betty” is an entirely different character. Even though the song may have led to Betty’s eventual christening, any reference to Betty Co-ed as a Betty Boop vehicle is incorrect although the official Betty Boop website describes the titular character as a “prototype” of Betty. There are at least 12 Screen Songs cartoons that featured Betty Boop or a similar character. Betty appeared in the first “Color Classic” cartoon Poor Cinderella, her only theatrical color appearance in 1934. In the film, she was depicted with red hair as opposed to her typical black hair. Betty also made a cameo appearance in the feature film Who Framed Roger Rabbit (1988), in which she appeared in her traditional black and white and was voiced by Mae Questel.