Should the current active window has its header bar's color changed by default?

[qhuy4119]

Currently, only the title changes color. In the image below, it's hard to tell right away that the Variables window is active. Other tools don't have this problem because they always have a blinking cursor on the screen.

If we change the color of the whole header, it's much easier.

Of course the user can do it themselves by creating custom theme and modify the focused_sidebar element but I think this is asking too much.

[inducer]

I'm in favor of highlighting the current window better.

[mvanderkamp]

Another alternative is to make sure that we consistently highlight the focused line. A lot of the themes will change the background highlighting of the focused line based on some context, which I think can be visually confusing to the user (at least it is for me).