And if everything else it opened in also showed black, there'd be no confusion here. But in every image viewer application, it shows the correct black text on white background. GDI+ doesn't.

Forgive my ignorance, but my issue isn't that I don't understand that it needs to be manually instructed to not do what it's doing, it's that I don't know how to accomplish that, especially in a way that wouldn't override the currently correct rendering of all .emf files not originating from MS Office.