( And ( ( while ( quarks ( have ( color charge ) ) ) ) ( , ( ( ( composite particles ) ( ( made out ) ( of quarks ) ) ) ( ( have ( ( no ( net ( color charge ) ) ) ( -LRB- ( ( they ( are ( color neutral ) ) ) -RRB- ) ) ) ) . ) ) ) ) )
(ROOT (S (CC And) (SBAR (IN while) (S (NP (NNS quarks)) (VP (VBP have) (NP (JJ color) (NN charge))))) (, ,) (NP (NP (JJ composite) (NNS particles)) (VP (VBN made) (PRT (RP out)) (PP (IN of) (NP (NNS quarks))))) (VP (VBP have) (NP (NP (DT no) (JJ net) (NN color) (NN charge)) (PRN (-LRB- -LRB-) (S (NP (PRP they)) (VP (VBP are) (ADJP (RB color) (JJ neutral)))) (-RRB- -RRB-)))) (. .)))
And while quarks have color charge, composite particles made out of quarks have no net color charge (they are color neutral ).
(ROOT (S (NP (JJ Iconic) (NNS compounds)) (VP (VBP have) (NP (DT a) (JJ net) (JJ neutral) (NN charge))) (. .)))