The colors can range anywhere from light tan to lime green. I usually
get a book on the subject when I start a project. I have
Squadron/Signal's book on the DAK, Osprey's book, and a large,
hardcover book on the uniforms of the DAK. Plenty of reference,
including color photos of uniforms and equipment.
You're not going to find a "magic bullet" color available in the store, if you're
that
worried about accuracy. Just use you eye and find a good base color,
then vary it from pants to blouse to headgear using greens and white.
You might choose some tan, and/or some mustard yellow as two separate
bases.
I like Humbrol 94 and 93.