The Collaborative International Dictionary of English v.0.48:

Pigmental \Pig*men"tal\, Pigmentary \Pig"men*ta*ry\, a.
   Of or pertaining to pigments; furnished with pigments.
   --Dunglison.
   [1913 Webster]

   Pigmentary degeneration (Med.), a morbid condition in which
      an undue amount of pigment is deposited in the tissues.
      [1913 Webster]