This is the Nobara official theme. I have only modified the styling code to make it light-grayish. There is a folder and a file. The folder "Nobara Light" is the desktoptheme, the one that colors the panel and the applications menu..etc. It needs to be in /usr/share/plasma/desktoptheme.

Then there is the file called NobaraModifiedLight.colors, this one needs to either go in /.local/share/color-schemes if you want it for the user only, or in /usr/share/color-schemes for system wide installation.

Make sure to change the icons to the papirus light ones.

You could also change the applications menu icon to a dark Nobara logo (or anything you would like).

I have also noticed that the Nobara package manager icon is almost invisible (first screenshot). I just changed it from the .desktop file of the app. Go to /usr/share/applications/. Find dk.yumex.Yumex.desktop. Right click and open it with kate. Replace Icon=nobara.package.manager With Icon=/PATH-TO-YOUR-DOWNLOADED/FAVORIT-ICON

Lastly, I highly recommend that you pair this theme with the to have the best look!

Enjoy