The Hulk was originally grey!
The Hulk is a fictional character, a comic book superhero appearing in publications by Marvel Comics.
He was created by Stan Lee and Jack Kirby and made his first appearance in May of 1962. The Hulk is portrayed as a large green humanoid that possesses near limitless superhuman strength and great invulnerability, attributes that grow more potent the angrier he becomes.
The Hulk is the alter ego of Bruce Banner, a physicist who physically transforms into the Hulk under emotional stress and other specific circumstances at will or against it; these involuntary transformations lead to many complications in Banner’s life.
At first, the Hulk was grey because Stan Lee did not want a color that would suggest a particular ethnic group. However, the colorist had problems with the gray coloring, resulting in different shades of grey. After seeing the first published issue, Lee chose to change the skin to green.
Green means life, green means the Hulk!