I am not too thrilled with the default skin texture on M3.  So, I loaded a different texture, enhanced it with BagginsBill's VSSProp, and re-rendered the scene.  If I wanted to darken the shadows better, I would decrease the light intensity. 

As an added note, these images were rendered in PP2010 using gamma correction.  P8, however, does not provide this feature.  You would need to add gamma correction to each and every material zone in the scene.  Not an easy thing to do, but it is available through python scripts.