charlest, I will occasionaly use black in the front of my thumb if I need just a lttle to tighten the thumb hole. I know I'm in the minority on that, but sometime that's all I need.
I've tried to new VISE tapes,and I still haven't decided if I like them or not. There are noticably more tacky than the standard white tape, and provide much more grip. My local pro shop got some samples in, so I've been the tester for him, and I'm still forming my opinion on the tapes.