Re: Avengers 2 News, Rumors, Etc. Pictures until release...
And Joss Whedon is writing and directing this. He likes to throw in cute nods like that.
If I'm wrong I'm wrong, but I don't believe that is his uniform.
He might not get a uniform. So far only Hawkeye and Black Widow wear uniforms ( and maybe Cap). Tony's in armor, Thor's in Asgardian attire and Hulk wears what's left of Banner's street clothes