Just for interest's sake, if you have a chance, take a view of
The Sunny Side of the Street, made by Columbia in 1951, starring Frankie Laine. A good portion of the show supposedly takes place in the CBS television studios, where every set, large and small, plays in color. Obviously a big plug for the CBS system. Naturally, the sets are not CBS's mechanical field sequential sets, the images were all matted in film, but they were trying to sell the idea of color TV. You can catch the show on TCM or read about it on their site,
www.tcm.com