What paints may be used to achieve these colours?

[gohkm]

http://www.coolminiornot.com/shop/miniatures/hell-dorado/hell-dorado-fatina.html

I'm referring to the fig in the above link. Would anyone hazard a guess as to what paints might I use to achieve the above look? Preferably using only Vallejo Model Air and P3 paints. So far, I've tried mixing green ink with Arcane Blue, further plopped into Menoth White Highlight, but to no avail.

 

[Dragonsreach]

Look for VAC Barley Grey and use that as your primary additive colour, the green I'd suggest thinned Luftwaffe Green VMC as a Starting point as that has a nice soft Sage green tone.
But I'd try to avoid the Olive greens as they are rather 'strong'. Rest of the time VAC white as additive as its finer and doesn't clump or "chalk" colours it is added too.