Alt-Tab Switcher Select Frame Color

[vistad]

Hi guys,
I am using Mint-Y-Dark-Blue theme and I am using Alt-Tab Window Switcher thousand times a day.
I AM STRUGGLING to understand which window is selected, because I can't see the black selection frame on dark background. Please help - tell me where is the color settings?! Or who to ask for help?!

I first posted this issue here: viewtopic.php?f=208&t=288186 - but no one helped me.

I have a problem seeing the black frame - on dark background - that highlights the selected item in the switcher box. The theme is Mate, but the theme settings file is cinnamon.css. I looked in there, but could not find the select color setting. I'd like to make this frame any contrast color that would make it easily noticeable!
Can someone show me how to change its color?
Thanks in advance!

[catweazel]

I first posted this issue here: viewtopic.php?f=208&t=288186 - but no one helped me.

Really? It looks like you abandoned the thread.

[vistad]

Guys,
no one knows where that God damn frame color setting is? Is it possible?!
At least give me a hint: if it's not in theme settings - where else can it be??
Thanks!

[vistad]

It is so bad nobody heard me! Linux Mint 19.2 is here but the goddamn frame color setting that steals so lot of my time is still there!
Please tell me WHO is managing it?!
Is it a part of Caja File manager, or what?
Thanks in advance!

[0aggautam]

install alttab in your debian distro using:
$ sudo apt intstall alttab