awjay, the shot was doctored with selective coloring by retaining the blues of the gang marks.  The rest was desaturated but not to total grayscale.  The blue was slightly desaturated.

The intent was to render an image with out a "sore thumb" jumping us and saying, "I am a selective colored image".   I suppose much of this is how we view the process and what we want to see as result. Thanks for the comment.  I hope my explanation tells you where I was coming from in the graffitti shot.           Tom.