Apple Watch SE rose gold color wearing off

Hello, hope I can get some solution about this here. My Apple Watch SE is wearing off its color in some places. It never fell or hit anything, so what should I do about it? It’s protected since day one. Wasn’t it supposed not to happen? Went to an authorized store and they didn’t even care about it. They said it is “normal”. They didn’t even give it a look. I’m not okay with this. Hope someone can help me get a solution.

thank you in advance.