Actually Snot green.
And if you looked closely at the shoulders pad of the power armor paint scheme you will notice that they are decals.....that is what those microscale industries products can do
My paint scheme:
Black base boat
Thin layer of Dark Angels Green
Wash of Black Ink (can use Babab Black Wash)
Two thin layers of my own Green (5 parts dark angels green, 2 parts codex grey, 1 part snot green)
thin highlights of snot green
Metals:
Boltgun metal
Wash of black ink
thin layer of boltgun metal with Valejo Glaze Medium
light dry brush of chain mail
lighter dry brush of mithril silver
Golds
Tin bitz
dwarf bronze
wash of black ink
thin layer of dwarf bronze with Valejo Glaze Medium
dry brush of shining gold