I hate our carpet in our apartment. Of course it's the cheapest beige carpet they could find and shows everything.
My old house had dark blue in most of the house, but for some insane reason, it also had carpet in the kitchen and bathrooms. The kitchen was at least a low-pile gray, more like an outdoor carpet, but the bathrooms were brand new blue shag that got ripped out within the first couple of months. No matter how many rugs and mats you have, carpet in a bathroom will get wet and mildew.