While we refer to them as red, white, and yellow cables, it's really the connectors that are color-coded — the cables themselves are usually black.

When I was a child, Sunday mornings meant hours of church – Sunday School, often closing with “Jesus loves the little children…Red and yellow, black and white/They are precious in his sight ...

Peter Raap ’68 takes the famous Sunday school chorus to heart: “Jesus loves the little children/All the children of the world/Red and yellow, black and white/They are precious in His sight.” Foster ...

While we refer to them as red, white, and yellow cables, it's really the connectors that are color-coded — the cables themselves are usually black.