The Fade property returns or specifies the fading of a perspective drop shadow. Values range from 0% to 100%.
Examples:
The following VBA example sets the fading of every perspective shadow to 80%.
Sub Test()
Dim s As Shape, ds As EffectDropShadow
For Each s In ActivePage.Shapes
If s.Type = cdrDropShadowGroupShape Then
Set ds = s.Effect.DropShadow
If ds.Type <> cdrDropShadowFlat Then
ds.Opacity = 100
ds.Fade = 80
End If
End If
Next s
End Sub