gtk2 + gtk3 fonts change

~/.gtkrc-2.0   gtk-font-name="Open Sans 10"~/.gtkrc-2.0 gtk-font-name="Open Sans 10" ~/.config/gtk-3.0/settings.ini   [Settings] gtk-font-name = Open Sans 10~/.config/gtk-3.0/settings.ini [Settings] gtk-font-name = Open Sans 10 Soft for changing themes: gtk-chtheme, gtk-theme-switch