Yes, this is another question about Weimar Berlin brought to you by another AH user binge-watching Babylon Berlin. (I'm rereading Voluptuous Panic right now, so there might be more. Probably about sex work.) It caught my eye in one scene of the show set at a boathouse where a bunch of the young male members and some of the young women are wearing matching orange-and-white striped tops, like the stereotypical navy-and-white or black-and-white striped Russian sailor shirt but in vivid orange -- not blazers or even singlets for when they're actually on the water, just shirts. Is this a depiction of an actual youth fashion thing, or is it purely fanciful?