If you watch the “Dark Shadows” series then you can see the switch over to color. In the beginning of color then it appeared that the camera spent a lot of time broken as there were often picture quality problems and episodes that had to be done in black and white.
I’m re-watching Dark Shadows right now on Tubi, and just got past the change from B&W to color. Interestingly there are some episodes after the change that are still in black-and-white or kinescope because those are the only prints they had of certain episodes. It’s amazing that someone had the foresight to keep DS for future showings, all 1225 episodes of it.