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