I decided to sparkle up my lovely Lady Muck by adding a coat of Claire's Glitter Top Coat, a nice glittery holographic.
Butter London - Lady Muck with Claire's Glitter Top Coat
Did I mention how very glittery it is? Oh, yes.
I prefer layering this over lighter colors so it blends in with the color instead of looking like bright little chunks of rainbow, but I'm more into the "subtle" holographics... (Right.)