My blonde maple Guild has a variety of short darker brown lines running at right angles to the flame, in the neck and also on the laminated back - about 20-50mm long. I've noticed those on photos of other Guilds too. What is that - sap pockets, or something indigenous to that variety of maple? I tried to take a photo of them, but my phone exagerrates the flame and tones down the brown lines, it doesn't quite look as good as this to the eye Maybe this is some kind of automatic Beauty setting for guitars?