I completely disagree that there is no advantage gained by having a non-contrasting libero uniform.
If the libero sets the ball in front of the attack line with a very similar color, it may not be immediately noticed by the referees.
The purpose of the contrasting uniform is so that it can be immediately recognized with peripheral vision.
The referee *IS* the arbiter of this at the match site. The referee may not always be correct. "
The NCAA is the final arbiter." Huh? "
The NCAA" doesn't make any decisions. People acting on behalf of the NCAA make the decisions. Again, those people are not always correct (as in this case).
The definition of contrasting is NOT in the eye of the beholder. The definition is clear...Definition of contrast: Strikingly different.
Very simply, royal blue and baby blue are not contrasting.
Contrasting Colors:
What Are Contrasting Colors?