A company on Cape Cod, Massachusetts, U.S.A. raises genetically
engineered Argopecten irradians (or Aequipecten, whichever is the current
placement).  Anyway, the company breeds these scallops for shell color, and
has produced several brilliant hues - yellow, orange, red, violet, and
combinations.  Originally their principal market was upscale restaurants in
Japan, which used the scallops as a garnish on fancy seafood dishes.  I once
inquired why these restaurants didn't just use small Chlamys nobilis, which
are just as brightly colored, and are locally common, rather than importing
expensive substitutes from the other side of the world.  I was told "they
just wanted something more exotic".  I guess exoticness lies in the eye of
the beholder.

        Paul M.