This is the kind of thing I usually refer to as a "funky green." You sometimes find these in Halloween collections, but this one is from a Women of Harry Potter collection, and it's meant to refer to Bellatrix Lestrange, although to my mind calling her slightly unstable is like calling Donald Trump slightly self-centered. (Sorry, that's the first comparison that came to mind.) It's definitely got a slight duochrome to it - brown, maybe? and I think also a little bit of holo glitter.