RE: Uniforms
Reguarding the question about black panzer wraps they were originally black wool, later field grey wraps were introduced for Stug crews but panzer crews adopted them as well. They also introduced a denim type wrapper as well, it was basically the same cut as the other wrappers except they had a large external pocket on the left side. The SS introduced a camo wrapper as well. There were some private tailored heer splinter wrappers as well. The difference between a Heer wrapper and an SS one is as follows, the heer wrappers had a center seam down the back of the wrapper the SS one didn't, also the Heer wrapper had an angled front flap where the SS one was straight.
As a side note there were a couple panzergrenadier regiments that wore the field grey wrappers with the application of the pzgren insignial(collar tabs, shoulder straps, etc) instead of the panzer insignia.