On Ebay, the script of the first episode of "The Colbys" is on sale. Interestingly, the name of the actors are mentioned in one of the page (see the attached file) and instead of Ken Howard, the name of Ron Howard is mentioned. It must be a mistake but it is quite amusing I think. Also, the actor playing Henderson (the butler) is not Ivan Bonar but Ben Hartigan. A last-minute change probably.