Change background color used in time for getting_started.py example so it is more visible on various terminals

Author: tleonhardt

cmd2/cmd2.py

@@ -1712,7 +1712,7 @@ def get_bottom_toolbar(self) -> list[str | tuple[str, str]] | None:
             return [
                 ('ansigreen', left_text),
                 ('', padding),
-                ('ansiblue', now),
+                ('ansicyan', now),
             ]
         return None