Here's ELF Metal Madness! I originally had a plain to do this with some nail art, but it just wasn't working out, so I just took swatch pictures instead. Metal Madness is a gunmetal like grey with silver micro glitters in it. The really neat part about it though is that it also has some sparse holographic micro glitters too! I'm not a huge fan of Elf's brushes, but nonetheless, it applied very nicely.
Blurred for holographic effect