While looking for the perfect purple a while back, I stumbled upon a swatch of this no name blurple, and went to the store where I had no idea that they sold nail polish, and there it was, the perfect puple, and now one of my favorite undercoats for layering. Looks great by itself too but here it is with shimmer.
Poshe Fast Drying Basecoat
2 coats Hot Topic Purple (I think it's called Bright Purple on their website but don't quote me on that)
2 coats Maybelline Colorama Top Coat 35 Cold As Ice