Starting with Arc v1.10, a name can be displayed in the menu bar to let the developers know on which server they are working on.

The parameter to update the name is the serverlabel and to update the color, it is the serverlabelcolor .

You can add the following lines to the settings.yml file (available in the Arc folder):

# A name to display in the menu bar
serverlabel: development
# A color for server label
serverlabelcolor: "#f5c311"

Once these parameters have been updated, just refresh your browser and you will see the new name and colors.