Mounts look good but why is the Wart Hog blue/grey?
Great question.  The pig actually was blue/grey.  The taxidermist took photos from our hunt and matched it.  If you look at the photos next to the mount it is a perfect match.
Warthogs really are a kind of blue color once you wash off the dust.  they get individual color from whatever they roll in.  
Here are a few photos, my pig, and his.  mine looks brownish red, his is blue.  My mount will be brownish red.  I have seen the shop photos and mine is not nearly as blue as Dads.
Very interesting...