fix INFO alerts not working when rainbow was disabled

dmx_queue.py

@@ -128,6 +128,20 @@ class DMXQueue:
                                     50,
                                 )
                                 sleep(0.025)
+                    else:
+                        for idx in forward + reverse:
+                            LOG.debug(idx)
+                            self._update_all(
+                                int(
+                                    (self.config.alerts.brightness / len(forward)) * idx
+                                ),
+                                0,
+                                50,
+                                255,
+                                50,
+                            )
+                            sleep(0.025)
+                        self._update_all(0, 0, 0, 0, 0)
                 self.queue.task_done()
             except Empty:
                 if self.config.rainbow.enable: