I can imagine that keeping that church dome shiny would be a tremendous undertaking! With my fear of heights, I certainly wouldn't want that job, lol!
Ah, yes, that green colouring with copper. My father's childhood home had a copper covering over its front stoop. He told me he was waiting for years for that covering to turn green! Finally, when he took me to visit his family home years later, he was excited to see it had turned!