So I'm buying a fountain pen at Kleinanzeigen (German craigslist), like I'm wont to do. The (badly lit) picture and the headline promise me a green pen. And I do receive this pen, but as it turns out, it's actually not green at all! How is that possible? Okay, the picture was badly lit, but why would anyone in their right mind still call this thing green? So I asked the seller, and, lo and behold, they answered: ...