The shoe matter

My mother bought me a new pair of shoes during the holidays.It is a pair of school shoes, which is white in color. But, That pair of shoes has a small gold design at the back, where the shoe brand is sewed. It is almost unnoticeable unless one stares at my shoes while I am walking. It doesn't really look like a sports shoes. Unfortunately, I was very unlucky that day. After recess break was over, I climbed up the stairs to my classroom. While getting to my desk, one very picky and sharped-eye prefect halted me. She gave me a warning and insist of me getting a new pair of ordinary white shoes.(Those shoes will look like an old, torn and tattered shoe after a few months) My heart sank. Big question marks were wandering about my head. I got quite irritated at that moment. But what could I do? Maybe I am wrong or breaking the school rules, but I just could not stand her attitude. I wonder why she looked at my shoes when she has better things to do? What kind of sport shoes am I wearing? Basketball shoes? Football shoes? Tennis shoes? Table tennis shoes? Badminton shoes? ? ? ? ? ? After making some amendments, it turned out like that.(As shown as above)