I am currently working on integrating a Facebook authentication system into my app, but I find the default log in button provided by Facebook developers section to be quite unappealing.
My Question:
I am curious about how websites like Stack Overflow manage to have such a sleek "log in with Facebook" button. If you log out of this site and then try to sign up or log in again, you'll notice the button (right next to the red Google + button). Do they create it themselves?