If you exit map, and someone tagged you and accept to follow, you have colored messages in a console:
If he's tagged red - you have red message he's following you (the higher priority - checked before not tagged);
If he's not tagged - you yellow text he's following you (the lower priority - checked after "reds");
If he's tagged green - no message in a text box - could be colored normally (green), but it would only spam a console - especially after encounters, when leader has high charisma.