Thank you. I did these models about six years ago. I may have a few progress shots, but I will need to dig around in the photo archives to see. As well as I can remember, I painted the entire aircraft (except for the struts, etc.) a light blue. Figuring the Fokker painters layered their streaky colors over this, I mixed oils straight from the tubes to get a greenish olive color and brushed it on directly with a chisel brush, about a quarter of an inch wide. I angled the strokes on the wings, striving for deeper and lighter color densities focused in areas, or "patches" as I went. I got some of this variation by cleaning the brush and stroking in the same direction, removing areas of the paint.
I then mixed in a little umber, to get a darker olive shade and applied this in "patches" as well. I removed excess paint using the clean brush method until it looked right. I think I made one more sparing pass with a darker shade than the second. Not very much of this though. Where the contrasting edges were too sharp, I used a small, round brush to blend the colors, but not enough to blend out the streaks. When it looked "right" to me, I stopped and let it dry for a week before gloss coating the decal areas — mainly the insignia areas — applied those and hit it with a satin flat.
I used pastels to highlight the rib tapes on Weiss' aircraft.
If I can find in-progress images, I will post them in a follow up.