I've seen all 300 episodes of The Red Green Show, & from what I remember, the first 5, or so, seasons were videotaped & mostly unprocessed, with the exception of the "Adventures with Bill" skits (Which, from what I understand, were videotaped & then were heavily processed to look like film.). I think that they switched to a fully processed film look when the show moved to the CBC in 1997 (There were, at least, a couple of episodes made after 1997 that were, for some reason, mostly unprocessed.).
I made that earlier post when all I was able to see of the Red Green Show was what few episodes were shown on my local PBS station, which were only a few seasons out of the 15 years, and a few DVDs and video tapes.
Steve Smith's (Red Green) son Dave does a show with Red Green episodes on Twitch on Sunday nights and he has mentioned that some of the people who worked on the show were involved with the development of the FilmLook process, and that is was used on the later shows on CBC.