== Update "Common Uses" section to include food coloring? == 

 I was surprised there was no mention on this page of the use of carbon black as a food coloring agent, as I linked to this page from http://en.wikipedia.org/wiki/Licorice_candy.  Can someone who knows better how to use Wiki possibly add this at some point along with other foods it may be used this way in?  (Sorry, no username, this is my first edit, I'll go register shortly)