Given that it is your own group you should probably know where the base is, so this change isn't super needed. With that being said, it may be useful to some people, especially people new to a group. If this change is easy to execute than I would vote positive. It's important to note that many other markers are also red, so I suggest any other color that makes the base stand out instead of red. Maybe the color of the group (although some groups may have a color that doesnt stand out) or blue idk.