No. The Amos 'n Andy Show was broadcast in the early 1950's. It was originally a radio broadcast with white people voicing the characters. When it moved to television, it had an all black cast. with an occasional white person, usually playing the part of a heavy.
No
The cast of Good Times Bad Times - 1969 includes: Jon Granik as Narrator
The cast of The Good Black Sheep - 1921 includes: Pete Morrison Esther Ralston
The cast of The Good Times Are Killing Me - 1975 includes: Nathan Abshire
It was the first play with a nearly all-black cast to make it on Broadway.
Garrett Morris
The cast of Remember the Good Times Vietnam - 2011 includes: Don Makuch
The cast of Let the Good Times Roll - 2005 includes: Harriet Dodge Stanya Kahn
The first black national sitcom in the US was a comedy entitled "Julia" in 1968. This was the first black sitcom with a black cast. Before this, black folks had played servants in white sitcoms. Julia was a nurse, uncommon in those days, and was a widow. See the link.
The cast of Inside a Black Box - 2000 includes: Curt Truman as First Officer Jim Tucker
brunette has reddish/brownish cast to the color. black can have a bluish cast.
It was the first play with a nearly all-black cast to make it on Broadway.