I feel weird on this site saying that I picked mine because of the long-since forgotten actually pro-God message of it. Before being chewed out for daring to believe in a higher power, I'm going to go on record, and say that I view my religion in the same manner as the artist Voltaire (an amazing musician) in that I will say I'm agnostic. I learned after my younger years declaring there was for sure a God, and in my younger years of adulthood claiming there for sure wasn't a God -- that essentially I was doing the same thing on both counts. I was sitting at opposite ends of the same spectrum. So now I'm more -- agnostic. In the way that I am just very politely and fancifully saying: I don't have a damn clue either way, like anybody else, but I'm not going to pretend I do. Do I believe there is a greater power like Jesus out there? Yes, I believe there might be, but I don't know for sure. Yet on that same note I don't know there isn't a being like that out there. My childhood experiences with Christianity are why I picked St. Peter's Cross (because, despite what your neighborhood Satanist will tell you, it isn't originally evil in it's message).
It's black because -- well, black is like the bowtie of colors if you use it right.
Bowties are cool.
By the way: three guesses as to who's a Doctor Who fan!