On FMIC-manufactured pickups, are the colors of the lead insulation a reliable indicator of MIA or MIM? I have never seen a known-MIA Fender pickup with blue/yellow lead insulation. It's always been black/white. I'm repeatedly seeing Fender "MIA" pickups being recently offered on eBay with blue and/or yellow lead insulation. What's more, I'm seeing pickups in new Fenders that supposedly have the same pickups that have different lead colors from each other. What say the experts?