Sorry for the delay.. Here are my results..
First time, I pulled, yanked and Gods know what, till EVENTUALLY, they came apart... You can see them marked (top left), but usable, I think.
The second time, I just pull them apart, and they came off pretty easily - other purple..
I figured.. well.. how about naked? If this worked, maybe we could have white speedos.... Pulled, pulled, yanked.. And they broke. I'm quite sure they can be glued on the speedos, but the method is far from sure (as I feared)