A pithy comment on the possible impact of the Mexican spray can on the beautiful game.

For the new season in the Mexican football league the referees have added paint spray cans to their refereeing equipment.  Whenever a free kick is awarded somewhere near the penalty area the referee sprays the spot where the balll is to be placed and he/she walks off ten paces and then sprays a line on which the defensive wall must be placed.  So far, this does seem to speed things up a bit, so it's probably a good thing.  But, I am wondering, what's going to happen when(not if) the referee pulls out the spray can (in lieu of a yellow or red card) to respond to a player whose "unsporting behavior" includes references to the said referees mommy or testicles (or lack thereof)?