Need help choosing paints-dunkelgelb- Sicily 1943

My opinion is that there is no such thing as "correct" color. As Ixion said, there are so many variables and factors that could tint a shade of pain one way or the next that you can get a general base coat and then go from there.

Within reason, of course. You should use a "standard" Dark yellow. The only one I would stay away from is Testor's Model Master---it's like, WAAAY greenish. I use Tamiya DY or Buff. But don't use the DY without cutting it at least 50% with either White or Buff. It's too "dark" straight out of the can, as most DY's are. Always lighten with white or tan.

Vallejo's Panzer Colors set includes both #978 Dark Yellow and #916 Sand Yellow. I am assuming their intent is to use the dark yellow as the base color and the sand yellow is to be lightly over-sprayed as a highlight...... Or at least that's how I would use them.

I have seen many pieces of German equipment in original paint, both from photos and first hand, it is obvious that there was considerable variation in color and tint / shade of Dunkelgelb throughout the war. A recent thread on Missing-lynx demonstrated this fact well. You can wade through this thread and make your own decision;

http://www.network54.com/Forum/47207/message/1364651560/A+%91big+question%92-+Dunkelgelb+%96+did+it+evolve-

I think Tom Cockle summarized it best;  "'I'm not sure you could say it evolved by design. Ron Volstad has several original pieces of German equipment in his collection and there are hardly two pieces that match color exactly. It is more likely variances from manufacturer to manufacturer and the availability of the amount of pigment used due to disruption in supply."

 There are 5 different Dunkelgelb colors on this chart, from Tomas Chory's CAMOUFLAGE COLORS-Wehrmacht-Heer, 1939-1945, I've seen others as well.

Then there are the effects of weathering, sunlight, stains, application differences, etc, ad nauseam....