I agree with Stan. It has been repainted. The rear dropouts and the drive side chainstay should be chrome. It would be a shame if it had been an '83 or early '84 when they came with the rather rare rainbow decals.
Slightly OT:
Does anyone know how to remove this FD band? I have the same mount on my '83, and I've never been able to remove it. I simply slid it down to the BB shell.
I need to know how to preform an exorcism.