I'm using gnome-shell. I've tried gnome-color-chooser and gnome tweak, but gnome-color-chooser does not work on GTK3 and, as far as I know, nor does it work on GTK2; the option isn't in gnome tweak. I have tried using dconf-editor, but I'm not sure what I'm doing. I've tried editing these files but I am not exactly sure what I should be changing.
/usr/share/themes/Ambiance-Blue/gtk-3.0/gtk.css /usr/share/themes/Ambiance-Blue/gtk-3.0/settings.ini /usr/share/themes/Ambiance-Blue/gtk-2.0/gtkrc
I am trying to make my Firefox Nightly window and the other windows to have the same blue color (they are currently white) as the date/time and the weather extensions.
I am using the Ice Cream Sandwich shell theme.