I was going to do that, but after looking at the mirrors I may take another path. The aft part of the mirror following the separation will get blacked out. Where the mirror head transitions to the triangle will get blacked out on the aft portion. The triangle will remain red with the lower leg of the triangle that appears raised getting blacked out as well. That would appear to follow the window moulding forward.
With that scenario The mirror would appear black as viewed from inside.