From the Star Wars Merchandise Wiki.
In April/May 2007, Lego® released three officially licensed Lego® Star Wars themed T-shirts, each with a graphic print on the front accompanied by a written quote from the movies.
"Now I am the master": grey textile; printed image of Darth Vader and Obi-Wan Kenobi in a lightsaber duel.
"Let the Wookiee win": blue textile; printed image of Chewbacca tearing the arms of a stormtrooper.
"Don't get cocky": stone/sandy textile; printed image of Han Solo holding a gun.