Mark Brader wrote:

Whatever happened to the flourescent sign on the station frontage?
ISTR reading that it was one of the first commercial applications of
coloured neon signage

So which was it -- fluorescent or neon?

Neon lights are the ones where a brightly colored glow comes from
inside a clear glass tube. (Red if the gas is actually neon.)
Fluorescent lights are the commonly seen ones with a coating that
glows more or less white. Most colored lighted signs today use
fluorescent tubes behind a colored plastic panel, although of course
there are several other choices.

Good point... As it was (reportedly) red and blue, I suspect it was neon.