Originally Posted by Farren
With respect to Quicksilver's clothes, if we're thinking of the same thing (the comment at the SDCC panel), Singer's answer was a bit of a dodge. He was asked if Quicksilver's costume was going to be the green one or the blue one, and he said "It's going to be a seventies costume." (I'm guessing there won't be a costume though).
He SHOULD have a costume, to make him more streamlined, reduce friction, etc.
But unless Beast is around to make him one, then I doubt he will have one.