I picked up Up All Night a couple of yeas ago at Sally's when it was on clearance. I grabbed it along with some polishes from the X Collection (VII and VIII). I've worn it here and there since, mostly in the colder weather because I tend to wear "appropriate" colors for the season. It's a pretty nice, basic polish.
Not direct sunlight
2 coats China Glaze Up All Night
1 coat Poshe
Up All Night is a deep, dark blue that I actually don't think tends to look black. You know how some vampy, dark colors just look black when you look down at your hands? This boarders pretty dark in some lights, but I never noticed it truly looking black. The bottle has a shimmer that doesn't translate clearly on the nail and it looks like more of a creme finish with some extra shine.
The formula was fine. I found that it's not perfectly opaque in 1 coat like I'd expect colors like this to be. Not a problem, though. It looked amazing after two coats and I will never complain that a polish requires two coats. That's like a standard. The consistency was great. On the thinner side so it was very workable, but not so thin that it would flood cuticles.