Update the exit message.

notification_server/cli.py

@@ -55,5 +55,5 @@ def up(
         asyncio.run(server.up())
     except KeyboardInterrupt:
         console = Console()
-        console.print('[green b][INFO][/] bye[/]')
+        console.print('[yellow b][INFO][/] [green b]bye[/]')
         sys.exit(0)