Wired has released a new Avengers: Age Of Ultron video detailing the visual effects that Industrial Light & Magic (ILM) put into the film. It also reveals that The Hulk was originally supposed to turn grey at one point.

"Initially, Hulk (Mark Ruffalo) was actually planned to turn grey when he is angry Hulk in the Hulkbuster sequence, but hey everyone want the green guy,"Mike Seymour revealed at the two-minute and thirty-five second mark. "So in the end, ILM just changed his eyes to make them look more sullen when he is under the control of Scarlet Witch (Elizabeth Olsen)."

Check it out in the video below.

In the comics, The Hulk was originally grey, but issues with the ink led Stan Lee altered his skin color to green. They explained the change by saying each skin color represents a different persona, fighting within Banner's subconscious. Green is the savage version of Hulk and the grey version is the thinker, who has used the name Joe Fixit at times.

Avengers: Age of Ultron is now playing at your local theater.