[DaiPlusPlus]

> And let's not forget the ridiculous need to install third-party software just to be able to tell which window has focus by the color of its title bar.

They added back the "active window titlebar color" feature in the 2nd Windows 10 update in late 2015: https://www.howtogeek.com/232176/whats-new-in-windows-10s-fi...