safe skin dyes
I've stained my fingers with slightly-poisonous malachite, but never got sick from it. in fact, my entire left arm got covered in it, and I felt fine. I never inhaled any, seeing as that's where it's mostly poisonous. so, basically, I just need to know what compounds are safe to apply to skin, and not get poisoned. I need the following 2 colors: Green and Black.