Ilan, the well-kept hidden secret to playing funky slap on a stock Ric 4001/4003 is
- wearing a hat,
- a tie and
- a bass-finish-matching shirt/V-neck sweater combo!
It's easily done, you want proof? Here @ 06:51 ...
And don't be mad, don't be maaaaad, Ilan (@ 09:11)!!!
Finish doesn't influence sound, but color sometimes does.