Luck of the Irish!

My family has Irish heritage.  Fahey is a common name in Ireland, or it is when I look it up on the internet.  My mom's side is O'sullivan.  You can't get any more Irish than that.  Today, I started pooping green.  I don't think it is my Irish coming out.  Sorry, I don't mean to be gross or offending.  Really what is going on is this is a by product of BK's Halloween Burger.  I probably won't be eating any more of them.  Who knows what other things are in the bun to get the black color.