/cgl/ - Cosplay & EGL

A somewhat different dye question -- does anyone know of good temporary hair "coloring" that will show up on **black* hair? So far all I've got are L'oreal Hairchalk (pic related) and various variants of chalk pastels, both require you to colour the hair strand by strand.

I want to try blue hair, but since I have black hair, the maintenance for going permanently blue is really high, and a wig doesn't have the right feel. Kind of hoping someone on here has some colouring method that will cover my hair much faster than coloring it strand by strand so I could just try it for a day or a weekend.