What TV shows did you watch that were first broadcast in black and white and then were later broadcast in color?
I remember watching Gilligan's Island and Lost in Space. I know Dark Shadows was originally broadcast in black and white and was later in color; I think the same was true for Doctor Who. But I didn't start watching either of them until well after they were in color.
I know there were a number of shows like Lassie and some Lucy shows that were in black and white and then later in color but they were more like early "reboots" with the same staring character but with a different supporting cast and different circumstances.
I don't think the Andy Griffith Show was every anything but black and white but it transitioned into Mayberry RFD which I think was always in color.