GoIndulge. I did 2 coats of CND Asphalt and topped it off with one coat of CND Amethyst Sparkle.
I have to say, these are my first CND polishes. I absolutely love Asphalt! It applied like a dream and was nearly opaque with one coat. If you do a thick coat, you can get away with just one. It's a very nice grey creme. I hate when dark grey looks too black, but this one is definitely grey. And I love the Amethyst Sparkle as well. It changed the whole look. It looks almost like a blue mani in the above pic. In real life, if you catch the shadow, it just looks grey, but when you catch the light it flashes with pink/purple. It's not really a glitter and you can't feel it at all, but it's fairly dense shimmer-like. I really like this mani. And I got lots of compliments on it as well!