Smurf uniform
n.— «So officials ran a pilot test at boot camp. All recruits are currently issued blue cotton pants and white T-shirts emblazoned with a Navy emblem. It’s affectionately known as the “Smurf uniform.” In 2005, Carroll said: “You don’t see it being worn much in the fleet.”» —“Every sailor to get PT uniforms, CNO says” by Mark D. Faram Navy Times May 5, 2007. (source: Double-Tongued Dictionary)