Returns a ColorFormat object that represents the color of the shape's extrusion. Read-only.
Example
This example adds an oval to myDocument and then specifies that the oval be extruded to a depth of 50 points and that the extrusion be purple.
Set myDocument = Worksheets(1)
Set myShape = myDocument.Shapes.AddShape(msoShapeOval, _
90, 90, 90, 40)
With myShape.ThreeD
.Visible = True
.Depth = 50
.ExtrusionColor.RGB = RGB(255, 100, 255)
' RGB value for purple
End With