  A new "Hidden Colour Hypothesis" within the framework of QCD, as an extension
of and in keeping with the spirit of the "Colour Singlet Hypothesis" is hereby
proposed As such it should play a role in a consistent description of exotic
hadrons, like the diquonia, pentaquarks, dibaryon$ etc. How these exotic
hadrons are affected by this new hypothesis is discussed here. This new
hypothesis suggests that the experimentalists may not be looking for single
exotics but for composites of two or more of the same.
