Hi Robert P.!
To answer your question, the camo on all of these was done by hand.
I do my priming, undercoating, and base coating with an airbrush, in this case an old Binks Wren that I have had for over 50 years. I have been using Humbrol Paints for all my micro armor painting for years.
The way I achieve the sprayed on look is by using several layers of thinned out and lightened paint over the base coat. This gives me more control than spraying and I have done a few models that way early on.
My colors are Humbrol #83 Ochre, #86 Light Olive, and #160 German Camouflage Red Brown.
After the base coat, I usually start with the green and thin out the paint really well, almost to a wash. I also lighten my colors with #35 Matt White for scale.
I use a fine brush and put in the basic green pattern being careful not to overload the brush with the thinned paint.
Once the first layer is applied to all the areas I want, I let it dry. Then I apply a second coat and let dry and then a third after that.
I then add the brown camo pattern doing it the same way.
One thing that helps to blend things is the wash. I do this after all the camo and detail work is done. I use a basic turpentine based very dark brown wash for that step.
This is a technique I have developed over several years and did some of the vehicles in the GHQ catalog that way as well as for myself.
