  Color confinement is only a supposition, which has not been proved in QCD
yet. It is proposed here that macroscopic quark gluon plasma in astrophysics
could hardly maintain colorless because of causality. The authors expected that
the existence of chromatic strange quark stars as well as chromatic strangelets
preserved from the QCD phase transition in the early universe could be
unavoidable if their colorless correspondents do exist.
