// FIXME: Make greeter its own object?
-gboolean display_connect (Display *display, const gchar **session, const gchar **username, gint *delay, GError *error);
+gboolean display_connect (Display *display, const gchar **theme, const gchar **session, const gchar **username, gint *delay, GError *error);
gboolean display_start_authentication (Display *display, const gchar *username, DBusGMethodInvocation *context);