Ok, thanks for the help, I figured it out. :]
I didn’t really want to add repo just to install theme, but i went ahead and follow the instructions and it worked. So what did I do differently?
I kept my themes in ~/.local/share/icons. It should have worked anyway, in fact, gnome-tweak-tool even saw the themes. When I moved them to /usr/share/icons it worked.
Now I’m still wondering why is that, but I’m glad it’s working now. Thanks for the help again. :]