I've only played the Colecovision version and don't really remember ever seeing the arcade version in any arcade, but didn't Exidy's Victory from 1982 have several lit buttons, of one type or another, that actually lit and/or had some function during gameplay? Surely, there are a few more isolated machines, not counting those with volcano buttons, that utilized lit buttons back in the golden era.
And, although it's not exactly from the "golden era", depending on the years you define the golden era as, but I think I've seen a picture of Top Secret, also from Exidy, that has something like 8 lit buttons of several different sizes/colors on it's control panel.
Of course, this makes me ask the question, if these buttons did serve some function, other than just staying lit all the time, does Mame currently emulate their output?