I was doing research on the polarity of various pups to mix in a strat set-up (before I realized I could just test whether the pups attract or repel each other to determine polarity) when I cam across the post below. It seems to be written by a tech at Suhr guitars, which would give it more weight to me. Usually folks cite Peter Green as the guy who used "out of phase" wiring in his signature sound; but this guy speaks of "Garcia". Maybe its just a typo? I can't think of another Garcia that wouldn't call for a first name besides Jerry...have I been missing something: did Jerry ever use "out of phase" pickups? Here's the quote, only the sentence citing "Garcia" is relevant...
"Suhr humbucker color codes bridge pickup are identical to a Duncan including polarity.
Out of phase is pretty horrible sounding unless you are in to Garcia and Hum canceling usually preferred.
Humbuckers can be wired inside out and most manufacturers will change wind direction and polarity for you.
Never reverse the black and white on a single coil unless you know the issue and pitfalls of doing this. Start wire usually black should always be closer to ground.
Most pickup shops including us will remagnetize / reverse polarity of a single coil for free, just the cost of shipping.