My favorite red nail polish is OPI "French Cognac." It's a perfect brick red, IMO, much like the LV pomme vernis, just the right brown undertones, no oranges or blues. It's awesome! Sadly however, it has turned thick and goopy in the bottle, no matter how I shake it. It won't go on smooth. Should I add some kind of thinner? This color is discontinued and I really don't want to throw it out or have to buy it on eBay or something. help!