What does the gold c on NFL jerseys mean?
If a player on an NFL team successfully stays as a captain for
the four years which is necessary to achieve four gold stars under
his Captain symbol (giant C) Then he will have earned a Gold C to
signify what he has accomplished. For example, In the 2011-2012
Season, players have started to wear the Gold C due to being a
Captain for four years. There has also been a rumor that the only
way to get a Gold C is not just being a captain for Four years
straight, you have to have taken you team to the playoffs within
your four years as a captain.