No Dark Colored Nail Polish Meghan has always stuck to royal protocol when it comes to avoiding dark or brightly colored nail polish at public events, but that probably has more to do with her personal style than any royal rules. Now, she has no choice. Nails must be groomed, clean, and painted with a light pink color (the queen's favorite is Essie, Ballet Slippers). But as we learned at the wedding, simple nails don't have to be boring. Image Source: Getty / Chris Jackson