Bill,
Hummm . . . and I thought they were overall gray?
Clean build, very good weathering and great job on the camo. You've captured the look of the early panzer vehicles as used in the early war campaigns. In a black and white photograph it would be close to impossible to see the camo as the tonel quality of the two colors are almost achromatic in a black and white photo without factoring in dust, dirt, shadows, and direct sunlight reflecting off of a dirty vehicle. Throw in aged photographs on top of that!
Three cheers,
-Eddy