> Since Windows 10 build 10056, Microsoft has blocked colored
> titlebars for all opened windows. Many users find this change extremely
> frustrating because it doesn't make it clear whether the window is
> active or inactive. It is a major usability violation. Here is how to fix
> it and restore colored titlebars in Windows 10 easily.
>
> There are some side effects that you may not want so read the comments.
Reading the comments (and the post itself) more closely, I get the impression that the only change this post brings, is that all title bars are then colored, active or not. There is still no visual indicator of the active window except for the (one-pixel-wide) border.
> I haven't tried this. I am going to wait for final release in 3 weeks
> and if they haven't restored this feature I will give it a go.
>
> http://winaero.com/blog/get-colored-title-bars-in-windows-10/