Here's what I use, light dun base from Coat d'arms, Coat d'arms khaki and faded olive splodges, vallejo German camouflage bright green swirls, chocolate brown lines and 971 green grey dots and lines. I hung up one of my shirts then put a sample of every paint I own on a piece of card, then just matched them up, ensuring I always chose the lighter options, if you think it's too light just put a greeny/brown wash on them. The sand for the base is from FOB Price, I'm just waiting for the first person to say it's the wrong colour for Afghanistan!