This is a beautiful, underrated multi-chrome. I think you can layer over black too, but I like the purple to really show, so I layered over lilac.
Poshe Fast Drying Basecoat
1 coat Cosmetic Arts Frenzy
1 coat Chameleon Blue Sky (must work fast, apply it in 2 or 3 strokes max)
Poshe Fast Drying Topcoat