I'm starting to think hueshifting implies that the hues are not blended in correlation to the actuallity of the situation. Meaning that the shift in hues is related to the artists whim, and not the technicallity of the suggested light.
Why am I thinking this? Because if it were based upon the technicallity and actuallity of the suggested light(since all color is derived from light), then there would be no real need for such a term. It is only when you disassociate yourself from the mechanics of light that such a term could mean anything because you'd need a way to describe your choice of color when your choice of color does not follow the commonly accepted rules.
If you are following the commonly accepted rules of light, then hue-shifting just means you are blending colors..