You bring up a good point. If people want to figure out how to do Material Design in a non-Google context, all they need to do is get a Windows Phone and see ho

You bring up a good point. If people want to figure out how to do Material Design in a non-Google context, all they need to do is get a Windows Phone and see how it's implemented in apps there, both dark and light themes. Google's design language is mostly a variation on Microsoft's.