# Could the universe have non-vanishing net colour charge?

I've heard that the strong force doesn't decrease in strength with increasing distance, and that's why quarks must be confined within hadrons. But could there be, say, a single quark out there, so that the universe would be colour neutral without it, but with it, it's not? Would such a quark have a "strong field" that would extend through the entire universe?

One may see why such an object is impossible in various more explicit ways. For example, close enough to the particle, the QCD gauge potentials would go like $1/r$, just like in the Coulomb case. But these "gluon" gauge fields are color-charged as well because QCD is non-Abelian, so they induce additional, increasing densities of the QCD field strengths.