Solutions that Stick White Collar Grime Disposable Collar Protectors-white-10 Feet

Is it possible to protect the very top edge of the collar from stains without the tape becoming visible over the collar?

Does it work with leather jackets without damaging it?

Is this available in different lengths? 10 feet is nothing. I would like to find a 100-foot length.

Is this available in a clear color of tape?