The original opening titles from _"The Mickey Mouse Club" (1955)_ had been filmed in color (though the rest of the show was filmed and broadcast in black and white), and could be re-used for this new series, with a re-recording of the theme song.
The Disney studio owned no video production equipment and had to rent all of it. The cost of this rental, coupled with the relatively low ratings of the show, was one factor in its demise.