The photo on landships2 shows the talbot truck in a dark colour dark grey/black green. In the scramble for equipment in the Mediterranean/African/Afgan campaigns, I think pretty much any standard colour would go. If you look at the imagies of the Rolls Royce armoured cars the variations on camouflage is quite extensive. But I'm sure some of the knowledgeable folk on here will have a more imfomed view of the colours