What year did the TV show "Gunsmoke" transition from a Black and White format to a Color format?

More Questions:

In 1861, Julius Sturgis started the first US commercial bakery that made what?

The term "black market" was first used during which war?

The musical "My Fair Lady" was based on what classic play?

Who wrote the essay "A Nice Cup of Tea"?

In Arthurian legend, who is the illegitemate son of Sir Lancelot?

A sonnet usually has how many lines?

What town is Oklahoma State University located in?

What ocean is the island-nation of Madagascar located in?

If you suffer from diplopia, what do you have?

With what is sulfur and saltpeter mixed to make gunpowder?

What is one of pi's rational approximations?

Which band member of The Germs died of drug overdose?

Who played Steve Urkel in the TV show "Family Matters"?

General John J. Pershing was in command of the American troops during what war?

What is the longest running Star Trek series of all time in terms of total episodes?