Wanted something more than just a plain swatch so I decided to do a crackle top coat for some interest. I'm really in love with the Nails Inc. Special Effects in Hackney. It is a great silver crackle and a subtle shimmer to polish without screaming "crackle!" I started with three coats of Sally Hansen Complete Salon Manicure in Eel Skin and topped with one coat of Hackney.
Here it is without a top coat. You can really see the texture of the crackle and it almost has a matte quality to it.
Here it is with topcoat. I love how this is a more subtle crackle and makes the grey base have a great interesting shimmer to it.