FYI, the variations in black color are caused by the peal ply.
If you wonder why 14'6 and not 14', it's for glide. My gliding increased when I added 6 inches. Also, when I swapped between my old 14'6 and a Glide 14, the loss of glide was noticeable. Since I only do downwinders, fitting into racing classes is not a concern.