nextbowler, do you use another brand of black tape, or do you not use it at all?

Brick, that makes sense.  Since my thumb changes size while I bowl, I would want to put a certain amount of white in back and put the black tape over it. That way I won't have to switch out the black just to put more white under it, and also to keep the amount I use in front under control.  

For example, I always like one white in front for feel, but that's not usually enough tape to fit my thumb.  My thumb shrinks as I bowl, from most swollen to smallest, is probably about 2 or 3 pieces of white tape.  Let's say I start most swollen and need two pieces, I would put one in front, one in back plus thin black tape.  Then I'd just add tape to the front as needed, typically that might only be a piece or two, totalling three in front max using this method.

I think that'd be a good way of doing it, don't you?