Irish Whiskey

Here's a metaphor:  I was told once that the two big distillers in Ireland were Bushmills and Jameson, and that the Protestants drank Bushmills while the Catholics drank the Jameson; oddly, they are orange and green respectively; outwardly, they are different in appearance; once poured, they are both orange; while Protestants believe they are the pure Christian faithful, once you strip away the ritual of the Catholic faith they are also true Christians.  We are all the same on the inside.