Well the bezel really is missing the usual red colors (the cannon, the invader UFO etc.)
That cab must have seen alot of sun. (red is always the first to go)
Maybe it had been in a store front or something.
Even the red on the cabinet art is faded, almost orange looking in places.
The artwork on the cab was probably painted using stencils, typical of that era.
I was thinking that someone was selling vinyl stencils for these, but I could be mistaken.
Still a good score...... always glad to see the classics being restored.