In the U.K. we have a monthly reprint series of Avengers comics called Avengers Assemble, and issue 6, from June 2012 looked like this.
And the American series, also called Avengers Assemble, issue 10, from December 2012, looks like this.
I can't imagine the British reprint comic would have had access to this image first, but I can't find where it comes from originally. It's not the cover of any of the comics printed inside, so I can't work out where it came from. I'd be interested to know which colour Hulk was used first too.
Does anyone know?