Maple fretboards are finished and if you play them it tends to wear through. Maple fretboards that have been played a lot tend to have very obvious grayish finger marks. Call it a badge of honor and keep playing. Rosewood doesn't have this problem, but I've always felt that a guitar that has been played a bunch is cooler that one in pristine condition.

Fucking love my 8 string baritone. There are a lot of videos on YT. The best part is that while the extra strings take a little bit of getting used to, you can mostly just pick it up and play it like it was in standard tuning. I have a lot of fun playing around with familiar tunes, pitched lower.

Obviously haven't been super active on here, but yeah... mine is a Taylor GT8. Such a cool guitar.