And a stripe (in the secondary color) on the white wire. Is that standard too?
I looked at the old phone wires (probably the original ones installed around 1969) in this house. They are red, green, and yellow. No black. Of course that doesn't really matter. They's need replacing if I wanted to use more than that one pair.
When I opened that box (on the outside wall), it was nearly as full of ants as was possible. This is not one of the newer NID boxes people often mention.