Hi,

You can customize the nodes shape, fill, outline and text:

ShapeNode node = d.Factory.CreateShapeNode(...);
node.Shape = Shapes.Decision;
node.Brush = new SolidColorBrush(Colors.Orange);
Pen p = new Pen();
p.Brush = new SolidColorBrush(Colors.Blue);
p.Thickness = 3;
node.Pen = p;
node.Text = "test";
node.FontSize = 15;

I hope that helps,
Stoyan

I create it like this:
ElementTemplate[] templateArray = new ElementTemplate[4];
templateArray[0] = new LineTemplate(0.0, 0.0, 100, 0.0);
templateArray[1] = new LineTemplate(100, 0.0, 100, 100);
templateArray[2] = new LineTemplate(100, 100, 0.0, 100);
templateArray[3] = new LineTemplate(0.0, 100, 0.0, 0.0);
MindFusion.Diagramming.Silverlight.Shape s = new MindFusion.Diagramming.Silverlight.Shape(templateArray, FillRule.Nonzero);
ShapeNode shapeNode = this.MyDiagram.Factory.CreateShapeNode(new Point(0,0), new Size(50, 50));
shapeNode.Shape = s;
shapeNode.Brush = Brushes.Black;
shapeNode.Selected = true;
but it can not be worked.

yes, it's ok now!
thanks for your help.