Pitchers and foreign substances

[Andy]

There is a big, long discussion on the baseball board regarding the stuff that Detroit pitcher Kenny Rogers had on his hand at the beginning of Game 2 of the World Series.

Rogers finger 'stuff'

I posed this same question on the baseball board to get a feel for the philosophy of how baseball umpires would handle it. I would like to ask how we as softball umpires would react:

If you noticed something unusual on the pitcher's person, would you intitiate an inspection or would you wait for the opposing coach to bring it to your attention?