[ThePillenwerfer]

A relative of mine didn't have a telephone until the late 1970s and when one was installed she was given the choice of ivory or black. She chose the former.

I saw a few green ones in the wild and an elderly neighbour, who never went onto plugs and sockets, retained an ivory, a red and a green 706L well into the 1990s. They were the only Ls I recall seeing in service as Sheffield wasn't a director area so how she ended-up with those I've no idea.

We had a black 746, and I think it was the early body-style, until 1992.

I don't recall seeing any blue ones.