First off the guy with the red tie. Waist Coat and Trousers are a 85% black/15% white mix. Once dry they were given a Citadel Nulin Oil wash. His Jacket is an 85% Army Painter Wolf Grey/15% White mix. Once dry it was given a 25% Wolf Grey/75% Matt anti shine varnish wash.
Fig2. The other chaps boiler suit is 90% Army Painter Wolf Grey/10% white mix. Once dry it is given the same Wolf Grey/Matt anti shine mix wash as the first guys jacket. The Shirt is white, once dried it has a 75% Vallejo German Orange Ochre wash. Both caps are 90% Black/10% white mix. Once dried given a Citadel Nulin Oil wash.
If you want to dirty the bottoms of the trousers a little just mix 75% black/25%sandy Brown and dry brush until desired grubbiness is achieved.
For illustration of the difference the original % of white to base colour makes, the chap with the shovel had is trousers done as per figure 2 and jacket as per figure 1.
John



