Bro, I'm having some problems trying to install the Siva Flat OP.
I have an Openbox enviroment on Arch Linux with some applications running GTK, the problem is, every desktop manager I try to use (lxappearance, etc.) doesn't install properly this theme, the only WM I got it working was openbox, and only the window borders work. (And the menu.) Inside the window, the default GTK theme stands still.
Do you know how to fix that?