gnw (gnw is not windows) is a Fluxbox theme with Windows 10-like titlebar icons.
* I use this theme with Boje GTK theme http://nale12.deviantart.com/art/Boje-1-2-1-342853818 with some modifications
* Adjust yourself the "bottom border" or window.handleWidth in theme.cfg line 49. I personally prefer 1, but smaller means harder to resize window. The default I uploaded is 3!