[tde-users] Change GTK apps' icons in TDE

Hi, As Kmail isn't a viable option for use with corporate Office 365 e-mail (it doesn't support OAuth), I've installed Evolution with it's Exchange Web Access package. However, the icons in it are from the Adawita theme, and I don't seem to be able to change them using Trinity. From MATE, if I change the Icon theme using the built-in tool it also changes the icons on Evolution, but that's not the case in Trinity. I had managed to change the font and the decorations editing the $HOME/.config/gtk-3.0/settings.ini, but not the icons. I've installed the gtk-qt-engine-trinity package and tried to change the settings from Trinity's Control Center, but that has only edited my settings.ini file and caused Evolution to not run at all, with this terminal output (evolution:2551): Gtk-ERROR **: 20:27:32.588: GTK+ 2.x symbols detected. Using GTK+ 2.x and GTK+ 3 in the same process is not supported Firefox also doesn't work now, with the same terminal output. I think I'm missing something here, because it wouldn't make sense that I'd be able to change the decorations and font, but not the icons. Does anyone know what I'm doing wrong? Thank you, Carlos