I just picked up a new power pro 900 power conditioner for my guitar rig, as I'm changing over to a rack setup over a pedalboard. My question is, there are color coded outlets on the back, 2 gold, 2 purple and 4 gray. What are they specified for?! The manual doesn't say a word about it....and I know the colors represent what should be plugged into them. Halp!

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Fender American Deluxe Telecaster (little 59')
Peavey 5150 II
Orange PPC412
Boss NS-2
Boss DD-3
Monster Power Pro 900
Korg Pitchblack Pro
Sennheiser EW 172 Wireless
Carvin 6 space rack