I was having this debate with a friend yesterday - bright colored line, white line, or muted color like a gray line?

What are peoples thoughts on the board?

I seem to prefer the various shades of green. I like to be able to see the tip well, but also don't want a gaudy orange thing out there. To me the white lines seem to show up TOO well on the water and the gray I have a hard time keeping my eye on the tip. I read once that the theory of the white line was that it was hard to see in the air.