Mine is an HJC CL-11 and is white. During the winter it sucks, as it constantly fogs up... Isn't their a product for your bathroom mirrors that keeps them from fogging up?
I am completely serious. Durring the summer I never lock up my helmet in one of the cases on my bike when I get to work, I always bring it inside. (why let is sit in the hot sun all day?) About a hour before I leave, I stick it in the freezer at work..it does stay cold for awhile, at least long enough to slip through all the side streets I need to go through before I hit the highway.I`m not sure whether you are pulling our collective leg here, or are serious KM. I can see how a cold helmet would be effective for a short time, but the cooling effect won`t last for long on a hot day.