Is it possible to theme the whole desktop in one OpenThemeData call?

OpenThemeData only themes one window at a time, this window must have class name like BUTTON, EDIT etc
If the desktop itself has a HWND, so can I pass the explorer/desktop HWND to OpenThemeData and theme
the whole desktop at once... if yes, where can I find the class (list) name for windows explorer/the desktop?
Thanks
Jack