Odd lighting discovery, Any thoughts?

[fmelindy]

i used to run 3X 250 watt 10k xms in a similar configuration on ice cap ballasts and noticed the exact same thing. I thought I was going crazy! good to hear someone else noticed the same thing. I switched out every ballast and every bulb and continued to notice the same thing - the order that the ballasts were plugged into the power bar definitely changed the perceived color of the bulbs. strange phenomenon and I thought it was just my setup...