How to highlight the desktop where I am in pager?

on my Laptop=Dell latitude E6510, RAM=8Gb, GPU=GT218 NVS 3100M, CPU=i7 Q 720 @ 1.60GHz running opensuse leap 42.2, plasma 5.9.5, KDE frameworks 5.33.0, KDE applications 17.04.0, Kernel 4.4.62-18.6-default, nvidia drivers, libreoffice 5.2.5.1

I would like to know in which desktop I am at glance in the desktop pager.
it seems to work only if there is an application opened in that desktop.
as you can see in the picture when I am in the desktop 1 and 6 where is opened thunderbird and firefox they are darker, when I am in desktop 2 there is no difference.
http://paste.opensuse.org/view/download/74122230
how to get something like this for the desktop in pager?
http://paste.opensuse.org/view/download/58189693
where “development” is highlighted with a light blue
and also, how can I change this light blue of “development” in something like red or other color mor visible??
manythanks, ciao, pier :slight_smile:

I am seeing the current desktop highlighted, whether or not there is an open application. Perhaps I should add that I rarely look. I seem to know which desktop I am on, without having to look at the pager.

I’ve noticed in the past, that this depends on the theme. I’m using the defaults, as far as I know.

I’m using Intel graphics. So I’m wondering whether your issue is related to nvidia graphics.

I use oxygen as theme and air as look and feel, I don’t like default-breeze theme,