As far as i know Poser is the one and only application that does those strange material settings. As stated above, black for highlight color is a really wild idea. And when i understood it right is done to get a good look in their own render engine. Without care for export issues. THEY must change not the others that are consistant (as much as it is possible in this industry) with the others. Yes, i think a Python solution would be excellent. And in my bones there is a little bit of hope that it will happen one day.

One day your ship comes in - but you're at the airport.