Double standards

I can't wear my septum piercing visible at work, or rather, I refuse to because of the comments I've recieved when I do. I have a variety of collegues with different very distinct appearances. Among them I have two male collegues who stand out from the rest; one has a huge, well-groomed beard and tattoos covering most of his right arm and the other has a snakebite piercing. There are occasional comments on the tattoos, some admiration for the beard and (surprisingly) next to no comments at all about the snakebite piercing. My green hair on the other hand... countless, every day, every hour (99.99% positive). When I wore my septum jewellery our customers would look less at my face, they would make weird discreetly offensive jokes, ask why I would do that to myself, talk about how hideous facial piercings are and so on ad nauseum (I even noticed how som customers would choose to decline my help in favour of one of my collegues or choose another checkout than mine if they could).
So naturally, I found myself asking why that was and then it hit me; I'm a woman. I am still seen as public property. It's seen as completely acceptable to comment on my looks at any time (hint: it's not). I also work in a shop. Which only works to exacerbate the situation. I'm supposed to be this comely and appeasing creature and while the green hair can be considered cute and quirky, the septum piercing is still considered improper to most. Put them together and all I am is a rebellious, untoward girl who've lost her way and need to be told so.