I got it.. like this.. GetResliceCursorActor()->GetCenterlineProperty(0)->SetEdgeColor(green); thanks. -- View this message in context: http://vtk.1045678.n5.nabble.com/How-can-I-change-the-color-of-axis-lines-of-vtkResliceImageViewer-tp5724564p5724566.html Sent from the VTK - Users mailing list archive at Nabble.com.