First Ad for color in 4/26/1954 Life Mag.

[old_tv_nut]

I have doubts about many of the color shows listed, especially if they were on CBS. For example, Wikipedia says I've Got a Secret switched to color in 1966. Some other series shows did only one episode in color. Shows carried by NBC are much more likely to have been in color than CBS and certainly not ABC.

Arthur Godfrey's shows were on CBS, and had been broadcast in the non-compatible CBS color system a few years before, but I don't know if they were broadcast in color afterward; it sounds iffy to me.