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The recent observation of a hadronic resonance $d^*$ in the proton-neutronsystem with isospin $I = 0$ and spin-parity $J^P = 3^+$ raises the possibilityof producing other novel six-quark dibaryon configurations allowed by QCD. Adramatic example of an exotic six-quark color-singlet system is the charge$Q=+4$, isospin I=3, $I^z=+3$ $|>$ state which couples strongly to$\Delta^{++}$ + $\Delta^{++} .$ The width and decay properties of suchsix-quark resonances could be regarded as manifestations of "hidden-color"six-quark configurations, a first-principle prediction of QCD -- SU(3)-colorgauge theory for the deuteron distribution amplitude. Other implications andpossible future experiments are discussed.

Novel Six-Quark Hidden-Color Dibaryon States in QCD