The base color is Color Club Cold Metal, a bold and vibrant blue from the Foiled Collection, released this past fall. The formula was awesome; just one coat will give you full coverage. It's then topped off with one coat of Lynnderella Mercury's Rainbow. Mercury's Rainbow is a mix of holographic hexagon glitter and silver glitter. Gorgeous! You can see it in the bottle how it flashes a rainbow of colors. It's hard not to stare and marvel at this one.
Lynnderella Mercury's Rainbow is a definite winner. I'm looking forward to play around with different layering combos with her.