User blog comment:Erockrule/Next Time On Young Justice "War"/@comment-3579848-20130204025409/@comment-1038387-20130204180507

Especially because he's already got a black and red costume. And Superboy is still kicking.

Also, the black and red costume was a reference to the black and red costume from The New Batman Adventures. Which lacked green to distinguish it from Dick's Robin suit.