Gray!
It's the first time the color isn't a different shade of red, blue, green, yellow or purple... but grey. For the first time, the "steel" kanji has the right color. XD
Now, who'll be on the side I wonder...? Armstrong? Armstrong? or maybe Armstrong?

Thx for the pic.

EDIT: Ooops, I wrote both 'grey' and 'gray' and, not remembering which one was the right one I searched for it... And found out both are correct. I'll leave it as such, then

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EDIT2: Ookay, I noticed now the steel kanji has always been grey... >.<
And the chosen color is actually white. D'oh!
Well, it's still diferent. And grey still quite predominant.