How do I change the contour line color from black to white? Stephen -- Stephen Wornom | Email : Stephen . Wornom at inria . fr INRIA Centre de Sophia Antipolis | Phone : (33) 04 92 38 71 79 BP 93,06902 Sophia Antipolis CEDEX | Telex : 97 00 50 F France | Fax : (33) 04 92 38 79 80