For men, dark-colored suits are preferred (dark grey and dark blue). Along the coastline the attire is more casual and colorful. For women, a suit or dress that is conservative. Again, dark colors for inland, lighter colors along the coastlines.
I really like this and think it would be a sick tattoo on the inner wrist. The word valknut is a neologism: it is formed in modern times through combination of ON valr, ‘the dead’ or ‘the slain’ and knut, ‘knot’.