Ive recently discovered how you can change the timbre even darker by plucking over the fretboard, even above the 12th fret!
I find this a bit tricky on my J with rounds, and easy on my flats Ibanez Sr 5, though I find that weird cause the Sr takes slightly lower action (and both are set what I would call medium action cause I sometimes try to pick hard, and like to dig in often).
Wherever I start plucking, also became aware that for some tight passages, as I move down to lower strings, I should drift bridgeward for consistent timbre and string tension. So if I drop down to E or B string, I may end up at the bridge, but at G I seldom like being below bridge pickup.
Floating thumb...