Override graphics by element - Add transparency of "<Not Overridden>" as separate from transparency "0"

[ks2_wmb]

I have a view where all roof elements are overridden by category to be 100% transparent.  I want to selectively override some roof elements in my view to be opaque again.  When I attempt to override the graphics of these elements to transparency "0%", they remain transparent (which is not the expected behavior).  In order to create an opaque appearance, I need to override the transparency to "1%".

Transparency "0" in the below dialog actually means "<Not Overridden>".  I want to split "<Not Overridden>" and "0", so that I can set a transparency of "0" as an override.