I use Arch + LXDE. I performed a full system upgrade and upgraded packages seems to have included GTK+3. Since the upgrade, my GTK+3 progs such as GEdit, Evince, etc.  look somehow terrible (unusual padding between button texts and button boundaries, ...) and I don't have the gtkrc in home.pacman -S gtk3 too, can't return the RC file. What should I do? Thanks for helps.
GTK+3 config Arch/LXDE
arch linux;gtk;lxde