Early color videotape material is hard to come by, for reasons alluded to in this thread from a couple of years ago:
http://www.videokarma.org/showthread.php?t=256599
The taped snippet from that Dinah Shore dates from 1958 and they call it the third oldest color videotape in existence.
If you want to show off your CT-100, Technicolor movies are a good bet, as mentioned.
Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html