This is the other colour I picked up from H&M last week. This is a gorgeous grey/blue with multicoloured shimmer, there is pink, green, blue, silver and probably more that I can't pick up in this lighting! Altogether it gives a lovely effect. This one took 3 coats and I did put a layer of Leighton Denny top coat on. I have had it on for the last 3 days and have no chips and not even any real tip wear!
You can see the effect of the shimmer here but not really all the colours that are in there, this really is a colour that you need to see for yourself.