After a recent further Study of Slave 1 at Identities we discovered that AX-032 1975 Coach Green has an almost identical hue to the wing wells, though these are heavily layered and weathered we think it is likely a main contender for the primary layer, also another possible Fett colour and X-Wing panel colour.
To be thinned with Archive-X AX-ATR thinner for airbrush use. Ratio's vary from colour to colour with an average of 70/30 paint to thinner.
Thin's with water for brush use.
