I used OPI - AmazON...AmazOff plus H&M - Manhunter to create a gradient with a piece of sponge. Clean up was really annoying but I do like the combination. On top is one coat of Essence - BTGN High Gloss. I think there is a pretty famous picture of a gradient like this, but I couldn't find it anymore. If you know where it's from, please let me know!