Perhaps the resources you have seen are confusing "force" with "energy", which is a common misunderstanding that frequently leads to mistakes in terminology. Energy must be applied to overcome the color force and increase the distance between quarks. The formation of a new quark/anti-quark pair when the gluon field becomes too stretched may provide an opportunity to confuse the constant strong force field with the increasing potential energy necessary to overcome that field.
Another source of confusion may be a misunderstanding of the color field, thinking it extends throughout space like an electric or magnetic field, rather than being confined to a narrow string-like gluon field between quarks.
For what it's worth, the Wikipedia article on color confinement says that the strong force between a quark pair "acts constantly - regardless of their distance...", citing T. Muta, Foundations of Quantum Chronodynamics (2009), and A. Smilga, Lectures on Quantum Chromodynamics (2001), so they all appear to have stated it correctly.