It seems that it's packaged differently:
gtk-theme-switch
The package contains two binaries, switch and switch2, which respectively are for previewing/installing GTK+ 1.x themes and GTK+ 2.x themes.
So you already have installed gtk-theme-switch2.
Yes, you are right. I did just read the first 3-4 lines of the package description. Anyway, after installing it, nothing has changed :?. Then I have tried
sudo gnome-theme-manager and the font size changed (within other things
). Now it looks much better (quite too bigger to be honest
).
Thank you very much for your help.
Best wishes,
Michael
[EDIT]: Funny thing the font in KDE/Gnome. After all the change, gnome applications use on kde the good font size, instead kde applications use a font size relatively bigger. Instead tthe font of e.g., menu title, file name and so on have the same size as the gnome applications. A quite good comprise seems to reduce the font size of kde with kcontrol from 12 to 10.