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
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
wash of black ink
thin layer of dwarf bronze with Valejo Glaze Medium
dry brush of shining gold
Adeptus Astartes Commandments
1. Thou shalt not replace the Librarian's staff with a magic wand.
2. Though shalt not refer to thine brethren, whom the Emperor has dictated be armed with an incendiary weapon, as a "Flamer" constantly. For this has been proven to lower morale and cause strife within His Most Holy showering facilities.
3. Thou shalt not follow a Librarian around thinking, "Can you hear me now", repetitively in an attempt to drive him insane.