J.. thanks for the pointer.  It stands to reason, in nature black absorbs light too.  Just never put two and two together.  For the sidewalls and tread of the tires; I didn't think I had it set to triple 0.  This truck was just a pita to set up materials for; but, I still like the way it came out.  I'd like a bit more polished chrome look out of the chrome instead of the brushed look that it came out as.