Ed Reitan has a very good chronology of color studio development at;
http://www.novia.net/~ereitan/studios.html
CBS in Los Angeles was the poor step-child for CBS color until the mid-60's. The Burns and Allen clip was color film and came late in their productions. It probably played off the Philco film scanner he mentions to the full network. The earliest shows were live and now survive as kines.
Maybe camera collector Chuck Pharis could fire up one of his TK-40's for New Year's Day.
Look around the internet for old control room photos and see how many used CT-100's or 21CT55's as color monitors!
Dave A