Don't know for certain, but I was told that the helmets with the green stickers were those with radio communications. And since the NFL would only allow one of those helmets at a time on the field, they designated them with a green sticker.
Quarterbacks
Those green dots signify that that helmet is wired to receive radio signals.
The green dot on his helmet indicates that he is wearing a helmet with speakers in it so the coach can comunicate with him on the field. The reason for the dot is so the refs can see who is wearing this type of helmet as it is a penalty to have more than one player on the field at a time wearing this type of helmet. If you notice, all quarterbacks in the NFL have a green dot on the back of their helmets.
its a sticker in memory of Gene Upshaw, a former player and head of the Players Association who passed away this year.
It is used as good play stickers. They have points for a player and goals for each guy and if they reach them the get a sticker(s).
The green dot on their helmet is a sign that there is a communication system in their helmets. So the coach can talk to him. There is one player on the offense that has one, and one on defense.
Tom Brady
The sticker was placed on the center of the tomato. The sticker shock was enough to send him back home without a new car.
you cant, but the sticker he sells its not worth it (its a poison mushroom)
"In This Moment We Are All Brothers" is written on the back of every clone trooper helmet.
Yes
protection.