Some people have no sense of humor.
This one was inspired by one student in my organ class, who keeps begging the professor to let him spray-paint his shoes metallic copper, among other things. He has never won so far, though that might actually be a good thing.
I would admittedly be a little wary of any concert where the uniform did involve plague doctor masks.
On an unrelated note, what does it say when the only reason you know someone's name is because of her headgear?