Originally Posted by The Apple
I "painted" my original headphones cord orange with a dry erase marker. It worked well for me and required a minimal amount of touch-up. So if you see an Expo dry erase marker in black, give it a shot. See if it works for you.
Dry Erase markers rub off almost instantly but thanks for the suggestion.
I stopped by the local hobby store and the guy there said the headphone cord was actually made of a good quality vinyl and that it would have to be dyed with special dye. He said the only thing that
might work is some automotive paint designed to paint vinyl bumpers. I looked for some online and found it but the cost was more than I was willing to spend.
My final solution is to just re-route the wires so they aren't so visible. Sometimes the simplest way is the best.