change default fill color

I am trying to change the color of the 4 ellipses I have created in the code you see below to black.  Can anyone help me out with this?  thanks

Sub regmarks()

Dim sr As ShapeRange
Dim x As Double, y As Double, w As Double, h As Double


Set sr = ActiveSelectionRange
sr.GetBoundingBox x, y, w, h


ActiveLayer.CreateEllipse2 x + (0.5 * w), y - 0.375, 0.125
ActiveLayer.CreateEllipse2 x - 0.375, y + (0.5 * h), 0.125
ActiveLayer.CreateEllipse2 x + w + 0.375, y + (0.5 * h), 0.125
ActiveLayer.CreateEllipse2 x + (0.5 * w), y + h + 0.375, 0.125


End Sub