The Aero glass theme would only work for Desktop mode in Windows 10. Since the phone doesn't have a Desktop, I don't see how it would even ever be able to show up to be seen. At least that's my understanding.
When we think of a theme like that, it's what makes up the task bar and window borders/title bars. The phone doesn't do smaller windows on a desktop, there isn't a window title bar, no task bar, etc., so there would be nothing to display the way I understand it.