I have/want to re-do the speaker wiring on the A'wagen. I am looking for speaker wire with the proper color insulation. Green/green-black, purple/purple-black, white/white-black and gray/gray-black.  I need about 20’ of the green and purple and about 6’ of the white and gray. 16-18 ga would work.

The usual sources (Crutchfield, Amazon, eBay) all come up with just generic ‘speaker wire.’ 

Does anyone know where I might find such that I have the proper colors from end to end? 

Jim