Im not so sure this will ever get mega popular/cool.

Its been a "normal" thing to do for 8-10yrs now on Jap cars etc, a lot of the Jap wheel compaines used to sell their wheels in black with coloured stripes.

The famous Advan SA3Rs for example- http://images.google.co.uk/images?um...f&q=advan+sa3r

For a good few years a lot of the nicer styled chav-mobiles have had this done too.

But its never got mega popular, and as ever, its got to the Ford scene last of all.

As long as the car is black, and the wheels are black, it works.