Its really hard to use KDE applications(kolourpaint, okular) because i have to squint at the screen to make out the toolbar items. And this is for someone who doesn’t have any accessibility needs(like people with color-blindness for example)
How is everyone else not constantly having Eye strain from this.


From what I’m reading online, you want to install
qt5ct(viasudo apt install qt5ctpresumably) and then run that to set a proper theme for the KDE applications.You’re on the
programming.devinstance, so here’s the technical details, in case you’re interested:KDE apps use the Qt GUI toolkit, whereas Cinnamon, GNOME, Xfce use the GTK GUI toolkit. These toolkits have different ways of theming them, including different configurations formats for that. The KDE Plasma desktop actually supports theming GTK applications by adapting the Qt theme configuration format into the GTK theme configuration format, but Cinnamon/GNOME/Xfce don’t support that in reverse.
So, what you’re seeing is the KDE application not having any theming information and just trying its best to display something, including the use of the icon set that’s available on the host system. By using
qt5ct, you can set this Qt theming configuration manually, so that it doesn’t have to guess anymore and can use a more fitting icon set.