If they are original sensors, each would have a part number that would identify its location. Without being in front of my O2 sensors I wouldn’t know the coloring. There is a reason a standardized location sequence is used in reference to O2 sensor locations. Are you saying the one you have marked is the bank #1, #2 sensor?

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Current vehicles
2001 325XI
2006 X5 3.0
2004 X5 3.0