I'm a fan and therefore follower of the White House Blog (set your newsreader to http://www.whitehouse.gov/feed/blog to follow along). The latest post reveals President Obama's completed March Madness bracket, with the teams filled in in his own hand, no less.
General Observations: Obama's picks are generally pragmatic and conservative (mainly top seeds, few upsets). He displays his thought process (question marks here and there, some choices crossed out and changed, including the overall victor). He also writes in all caps. Do with that what you will.
Why do they all have same color suits, same color ties? Green: fashion or conspiracy?
I'd say the Green is probably a St. Patrick's Day conceit (which is odd, if you ask me).
Re their suits, perhaps politicians buy in bulk.