In the context of Length of loop considerations, which item is not listed as a factor?

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Length of loop considerations focus on how far a signal can travel before it no longer meets electrical requirements. The resistance of the cable matters because longer runs add more resistance, causing attenuation and voltage drop that can degrade the signal. The signal limits of devices set the maximum allowable loss in the link; if the path exceeds that loss, device performance suffers. Pair loading—the amount of active pairs and how they load the transmission path—also affects the usable length because it changes impedance and insertion loss along the loop. Cable color, however, is purely cosmetic and does not influence electrical performance or allowable loop length. So the item not listed as a factor is the cable color.