Cawley, redfish's reply has the hint. "Spinnaker or Spinniker" white is the code given here. It is also on my '79 Magnum. The name is telling you where it came from. It is the front sale on a sailing ship. A ship with sails that has the long triangular one up front is what it is. The off white color is due to it being constantly hit by the waves and other debris (sp?) it may encounter.
I have my chops busted once in awhile when it is next to a truly white car as it looks dirty by compare.
