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			As it's written, the answer to the first one is really 4. Simply being different from the teammmates isn't enough, as contrast has to be present. Shorts have to be the same color, and black/white has never been part of the requirement.
		 
				__________________Felix A. Madera
 USAV Indoor National / Beach Zonal Referee
 FIVB Qualified International Scorer
 PAVO National Referee / Certified Line Judge/Scorer
 WIAA/IHSA Volleyball Referee
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