Disclosed is the preparation of compositions which are blends of certain types of hydrogenated ethylene-dicyclopentadiene copolymers in combination with elastomeric polymers. The method includes heating a coffee extract at a temperature and for a time selected to produce an intensified color coffee extract without altering the flavor of the coffee. Another step includes externally vibrating the workpiece before the applied curable coating material has cured. Prior to insertion, subsequent to insertion, or concurrent with insertion the permeability of the vessel is increased thereby the genetic material is delivered to the parenchymal cell altering endogenous properties of the cell.