I'd Say Necron Abyss through Enchanted Blue highlighted up with Bleached Bone :beat-up: and although it's VCs you're wanting the snap fit Chaos Warriors are probably a better choice for Playing with schemes as they have Massive Cloaks and Shields to play with
I did this same look and after some trial and error my final recipe was necron abyss then layer up with hawk turquoise. Final highlight I think I played around with adding ice blue or white to the turquoise.