This color looked very similar to IDK, in the bottle...but the polish was very watery and thin. The purple base color takes four coats to fully appear, and even with four coats I had a tiny bit of VNL. I wonder if, because this was one of OPI's first Designer Series polishes, the formula hadn't quite been perfected? The other Designer Series polishes I own aren't as readily opaque as the China Glaze holographics, but none have been quite this sheer!
The holographic effect is similarly softened. It's not quite the scattered-holo effects of the Kaleidescope collection, but it's not the prismatic effect of the OMG colors, either. The other Designer Series colors I have seem to vary in terms of holographic effects, and most of them have that abraded area on the bottle where the official OPI serial number was filed off, so if these are counterfeit OPI someone's gone to the trouble to counterfeit individual filed-off serial numbers as well.