I bought the Panzer Dunkelgelb 1943, but its not right either. It is a little better than the Doped Linen, but it is too green, and does not match. I also picked up a bottle of Sand, to try Darth Millers mix, since I already have the Up Armor Yellow.
The Sand is very light, so I went 2 parts Sand to 3/4 parts Up Armor Yellow. It worked out to about the right tint of color but it was too bright. I added in a few drops of Black to tone it down a bit, and it looks pretty good.
While I was at the hobby shop I noticed a few collors in the "desert cammo" line that look real close. IIRC there was a color called Desert Sand that was darker than plain Sand and may be closer to what we are looking for. Next time I make it to the store I am going to pick up a bottle and give it a try.
Gator