A Church apse painted by graffiti artists

I heard about this the other day as I was driving from one place to another.  It sounded interesting.  The priest used local graffiti artists but would not let them begin until they studied the Romanesque style he was interested in.  They went to Barcelona and came back and began to paint.  I think the end effect is pretty stunning.

 BBC has an article with pictures
http://www.bbc.co.uk/news/magazine-21529832