Although the basic format remained the same, the series moved to NBC on September 24, 1961, to take advantage of that network's ability to broadcast programming in color. In addition, Walt Disney's relationship with ABC had soured as the network resisted selling its stake in the theme park before doing so in 1960. In a display of foresight, Disney had filmed many of the earlier shows in color, allowing them to easily be repeated on NBC; since all but three of Disney's feature-length films were also made in color (the three black-and-white exceptions were "The Shaggy Dog", "The Absent-Minded Professor", and "Son of Flubber", all family comedies starring Fred MacMurray), they could now also be telecast in that format.