Copper Buttons Oxidization

I propose that if the copper golem wins (or if you decide to just add in copper buttons anyway) that they should have a new unique function that no button has had so far. as the button oxidizes i propose that it holds down for a long time. maybe at no oxidization being faster then any other button, but at the lowest level holding for the longest. seeing as how oxidization is such an integral part of copper and its uses, and the fact that we simply haven't had any buttons made of metal yet i think it could be a feature really pushing copper to its best potential.