Granted that it's not any polish but a couple of vibrant colors (such as the new collection from WetnWild), but still, it's a craving. When you crave certain things, you can always track it back to your eating-habits. Lacking iron, deficiency of zinc or you're just low on B12. Here, have some spinach, sunseeds and hemp and you're all good.
But with polish cravings, what is it I'm lacking? More than money that is?