Cliff,
I don't know where you are in your wiring project, or what your intentions are...
A week or so ago I searched the Internet exhaustively for wires with "tracers" (the colored straight or spiral stripes on solid colored wire). Almost all the suppliers I found had minimum quantities well in excess of my project needs, or their pricing was egregious.
I found one company called Rhode Island Wiring Service (
www.riwire.com) that offers a HUGE selection of different colored wire with a multitude of tracer options in various gauges. Their minimum quantity is only ten feet! I also found their pricing to be very reasonable.
Probably the best part is their customer service: Outstanding. I recommend them highly and without reservation.