Bests & Worsts Reviews from Amazon

I brought this case for my new Iphone 11 and at first fell in love with it! Would have given it 5 Stars easily. But I noticed that after a week the outside rim of the rubber started turning black. I tried cleaning it, but it still is black! I don't know if this one is defective or something. But I don't think it right for a case to start turning black after a weeks use. I would expect this from a considerable amount of time and use. And for the cost, it would expect better also! Update: it’s been two weeks and it gotten worse. Looks disgusting!