Our existing rug in this room has developed a lump. We've tried everything from rolling it on itself, ironing it, and weighing it down but nothing gets rid of the lump.I've always thought it was a bit busy anyways, so I'm trying to figure out what to replace it with. We have two dogs which is why I don't like anythingwith a defined pattern in case they have an accident. They are also black and shed a lot.Overall furniture is fairly solid in color, blue chairs, caramel couch and walnut wood piano. The accent chair is blue with green and white diamonds.Any suggestions on a rug here?