I know this forum is not really interested in etymology...
However, when I first read this "pinstriping" term being use to refer to the black lines between the pieces of a sail layout, as a non-native English speaker I really wondered where the @#$%! that was coming from.
Nancy very kindly told me:
the term used for a particular style of decorative painting on cars
However, this has now only translated my doubt from the realm of kite sails to the realm of car paint...
Can anyone out there that vanish my doubt?