Review (2/5): Difficult to accurately give stars, varying quality and color accuracy.
The green shimmer is A+, gorgeous color, not too thick or thin, great opacity (2 thin coats).
The spring green is brighter than represented, almost a lime. It's also thin, very low opacity, and turned yellow at the ends of my nails after roughly 3 weeks. It also chipped a bit in three weeks, on toenails.
The smokey lavender is actually just a slightly lavender-toned medium gray. The dark blue is actually just a blue-toned medium gray. The blue-gray is just neutral gray. The colors in the swatches are NOT accurate for those three shades. The formula is good, the colors are just off. This isn't due to the difference between displays, either.
I haven't tried the olive yet. It is, at least, fairly color accurate.
I love the green shimmer, and do like the grays. I can use the lime green, and the olive will probably be serviceable. But part of the point of this purchase was to have a smokey lavender and a dark blue, and I don't. So I'll have to spend more to get them. Disappointed.