Question 1 Answer: No, you can have black lines too, Craig, in polyester (or whatever); however, I'm sure they are undoubtedly hi-tech;
Observation on flaking: They do have a very different boom that wouldn't take a "Stack Pack" type cover. You can't really tuck a new Kevlar sail into as compact a form until later in its life when it's "memory" has started to form. The cover goes over it. It needs to be loose enough not to mildew (unless the crew removes it each evening).