This is a deep, black cherry cream shade. The flash makes it look a little less opaque than it does in real life, but it shows the cherry undertone well (this is with two coats.) I find this shade very flattering on my pale hands.
Rococo polishes are available at SpaceNK, and this was £11.50. I still can't get hold of that blasted gold leaf top coat, and I think it would look fabulous over this shade.