Copper tiles are recently slowly gaining popularity though they have been in existent for quite some time. That’s because of the rich colour that copper backsplashes tiles add to your entire décor. This actually makes them one of the best backsplashes to use in your living space. So why do copper tiles age so beautifully? Well, the answer is quite simple. Copper is a natural metal and when left alone it changes color. In its natural state copper oxidizes to develop a patina.