DarkSaint85
Bonified abstract
Carvers' interpretation means that he was green, then went into battle gray.
The colourist did a proper job on him, but messed everyone else up.
My interpretation is this:
Banner made a serum based on the alternate Hulk. If he ever needed to, he could stop the transformation into Hulk, and stay Banner.
However, in the fight with the Great Society, the monster was needed. So he can turn into the Hulk at will, when a battle is imminent.
He fought under an amber/red sun, but as the fight went on, the stronger he got. To the point his eyes were beginning to pour out green light of their own.
Then lost.
The only thing carver hates is that he lost. And so, he wants us to believe that the colorist doesn't know how light works, doesn't know what colours he's meant to use, but remembers that detail of the hulk being gray.
And that Banner in a fight will throttle himself into gray hulk.
Even though we have never seen such an instance happen since.