No doubt that the Ernie Kovacs "Silent Show" from 1957 has been mentioned, as a lenticular color kinescope resides in the UCLA archive. Hopefully, it will be included in an upcoming Kovacs box set.
Until then, this little gem is possibly from that broadcast:
http://www.youtube.com/watch?v=PefS8tY_gnI
Not sure, as I have a B&W tape of that show and I don't recall audience laughter, but regardless of its origin, it's great to see Kovacs in color!