I wondered about that. [ Her smile is a touch more sincere here. Something about the name and colour comparison triggers the warm trust Katniss associates with familiarity. Though she can't trace the origin, it doesn't bother her. If anything she feels more comfortable opening up about how much she knows - rather, how much she doesn't. ] It's not a side-effect of the magic is it? We don't have anything like this in Panem. [ she shrugs ] Not unless you count electrically generated force-fields as a type of magic.