Very funny video...small screen, but funny.
http://content.jengajam.com/rainbow.wmv
Backstory according to another site I read. This was a children's show in the 70s, and occasionally they would do outtake clips for company christmas parties and things. They were never meant to be seen by public eyes, but with the advent of VHS and then the internet, they made their way to public media. This particular clip was a skit made just for the enjoyment of the cast, (lol), and made it to the Christmas party showing. pretty funny...too bad quality sucks.