I don't know why it's so difficult for brands like Sennheiser or Beyer to design headphones that look "cool" to the younger market. If Skullcandy can do it, better engineers should be able to do the same. But they continue to make ugly headphones like the HD280 that appeal to no one. It's just simple human instinct to be drawn to shiny colorful things
maybe the engineers think they will lose their pride by making shiny headphones with red cord. Well most people(and the companies) here are biased toward the idea of good SQ -> no need for a bling design. Well the upper the steps you go, the cleaner the design gets(I'm thinking of grado right now), but no design appealing.
Well then there's the extreme, the Jade pre production model(as I recall, correct me if I'm wrong) and the HE series from HD. HE-4, 5LE, 6 all share the similar design, and maybe 3 also will.
And of course in business, creativity and different approaches always makes money.