I made a cherry cobbler, and used typical ingredients for the topping: flour, butter, salt, sugar- nothing out of the ordinary. I dropped the dough by on top of the filling and popped it in the oven - when it came out of the oven the dough had turned green??? I did NOT put any food coloring in the dough - we did not eat it but I cannot figure out why this may have happened. Any ideas?? I wish I had a picture to post. - I tossed it w/out thinking to take one.