I am using visual studio dark theme. As a result when designing my views I cannot see the font if its black. A fix will be to set the background of the view to white. But ou
Not sure if it's exactly what you're looking for, but what I do is just plop a trigger in the app.xaml to invoke using the IsInDesignMode property like;
Namespace (Thanks Tono Nam);
xmlns:componentModel="clr-namespace:System.ComponentModel;assembly=PresentationFramework"
XAML;
Simple, but works, and sometimes I target other dependency properties like font and stuff too depending on the need. Hope this helps.
PS - You can target other TargetType's with their own properties the same way, like for example, ChildWindows, Popups, Windows, whatever...