When I was running Gentoo, I wanted to replace the GNOME foot that appeared on the dropdown menu with a Gentoo-fish-in-a-wizard-hat icon. I found documentation

When I was running Gentoo, I wanted to replace the GNOME foot that appeared on the dropdown menu with a Gentoo-fish-in-a-wizard-hat icon. I found documentation suggesting that the icon shown on the menu was set in a certain configuration file, and changed that file. This meant that, when I was using the normal UI to customize the GNOME topbar, the icon associated with that menu, in the GUI, was the fish-wizard icon. But it did not change the icon displayed in the menu itself. I always resented that. I still don't like the concept of hiding configuration lest the user change it.