I think there are conflicting factors when deciding between blue and brown. In the corporate world, blue is a more common color, while brown is traditionally the prerogative of senior management; some of us can recall that Ronald Reagan almost always wore brown suits which was quite a radical move back then. Blue however, as others point out, more directly evokes Heuer's racing pedigree. My sense is that the iconocalst/intellectual will lean towards the brown/fume/smoke spectrum, while the racer/sportsman will gravitate towards the blue. I would prefer brown myself, but would probably elect to go with the blue as the avatar for the Silverstone.