I got these in the mail a few days ago and let me tell you, I was EXCITED. I had seen swatches on a blog or two and had no clue how on earth these new crackles worked. Well...
Firstly, they all come in two packs, one white base and one crackle. The crackle is where the magic happens (to prove it, I've swatched over silver in the second pic. That's Zoya Trixie, by the way). One crackle's purple (Remix), one's green (DJ Spinner), one's yellow (Emcee Me), and one's orange (Rave). They all appear as their respective colors but with black crack on top. It's hard to explain, so just look at the pictures!
The idea with these is to create art: rough, 80s street style art. You can apply them a whole bunch of ways and in any combination.
My verdict? I kind of adore it. Yes, it's a bit gimmicky and yes, you've seen crackle polish 10000x before, but this seems new and different and the result is actually really cool. I've worn them out a bit and no complaints here!