It's been so long since the Marlins wore this cap that their last starting pitcher to wear it is Mark Buehrle, who's been gone from the team for over 8 months.  Here's Mark wearing it during it's final appearance on June 7, 2012.
Marlins Red-Orange Cap 2012
Marlins Grey Orange
MLB NL East Batting Practice Caps - featured
Screen Shot 2012-04-11 at 08h44.28
Orange alternate with new retro white-panel cap