28+72+103 and you can add 27 to grey out the tone if you wish. I don't have ratios, these colours were just mixed as part of my test strip stage which I highly recommend doing to get the desired effect...
A long over due update! Apologies to my customer. So this is the new green mix added to the back panels, I have been careful not to go too heavy with this final layer as there is a degree of wire wool buffing to be done to thin it out slightly and let the colour underneath show through in certain areas. This stage will be the first weathering step once all the paint is on. There are a couple of super fine details to be added also...
Managed to find time to push to the next stage; all the base grey damage has been liquid masked and a blend of two Humbrol silvers airbrushed on, then a brighter Humbrol silver applied to certain areas to give the desired effect. After 24 hours to dry the surface is lightly buffed to remove any graininess and then wiped clean with a damp sponge ready for the next stage...