Robert P. Edmonston has joined EC Pigments USA, the U.S. manufacturing and marketing subsidiary of European Colour plc, as president. The role of president of EC Pigments USA is a new one and reflects a change in its approach to group management. As president, he is responsible for all aspects of the EC Pigments USA business.        “By making EC Pigments USA a freestanding group, we expect the team to develop the full potential of the business working with our customers in Canada and the U.S....