NBC, because of their cross-ownership back in the old days with color TV pioneer RCA, had about a 10-year head start on the other two original TV networks when it came to game shows in color.
Since What's My Line? on CBS might have experimented with a color episode or two in the late 1950's, but didn't go color regularly, of course, until September 1966, does that make Face is Familiar from just a few months prior, CBS' first game show to be regularly transmitted in color? [Or did Art Linkletter and House Party get there first, and does that count as a game show despite Art's segment with the kids and a few other non-game elements?]
And when ABC's Dating Game went primetime in late 1966, didn't it go color as well, and would that have been ABC's first such game show? [I think it was.]
