For this one, I used Color Club Electro Candy neon purple with blue shimmer as the base nail polish color. On top of that, I stamped Color Club Electro Candy neon blue with green shimmer with Bundle Monster plate BM-203. I topped it off with Revlon clear top coat. The result was definitely not noticeable from very far away, but looked pretty neat up close.
On this one, I used L.A. Colors gunmetal gray (BCC 558?) as the base nail polish color, stamped Nabi Neon Purple with Bundle Monster plate BM-214, and stamped Nabi Purple Glitter over that with plate BM-201. On top is Revlon clear top coat. I liked how the colors mixed into a metallic gray purple from far away. I took these pics a few days into the manicure, so my nails are showing some edge wear.