The right shade for the dunkelgelb RAL 7028 color is a source for endless debate as i found out there is not a single simple answer for it. The color ranges from anything between a yeloow, sandy color to a distinct greenish mustard color and even shades of brown.
To further complicate matters, the germans got this paint handed out to them in the field where they mixed it up with petrol and/ or water. The color variation is staggering this way. Also the color would change as it was exposed to the elements.
Just googling "dunkelgelb nach muster" will show you what i mean:
http://www.google.nl/search?q=dunkelgelb+nach+muster&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&hl=nl&tab=wi&biw=1011&bih=776
Funny this topic should pop up here since i was tackling the same issue as i am in the painting stage of a german hetzer over at the armor corner. My choice is revell sandy yellow which has a definate green hue to it.
My conclusion: Anyone can say ral7028 is too green, too yellow or too brown and be both right and wrong. Use your gut feeling i would say...
Richard