player selector sign text

/blockdata ~ ~1 ~ {Text1:"{selector:\"@p[c=1]\",color:dark_aqua}",Text2:"Rocks My",Text3:"WORLD"}



blockdata ~ ~1 ~ {Text1:"{text:\"[click]\",color:green,clickEvent:{action:run_command,value:\"/say @p has left the blue team\"}}"}

blockdata ~ ~1 ~ {Text1:"{text:\"    \",color:green,clickEvent:{action:run_command,value:\"/say @p has left the blue team\"}}"}






/clear @p emerald 0 1