Color neg film has long been know for its good tolerance of overexposure. So this seems to well complement the color neg intolerance of underexpose, where the colors get 'muddy'. So, by overexposing by 1EV, one can avoid muddy color in the shadows.

Since the labs automatically print based upon density of the neg, a more dense and slightly overexposed neg simply gets increases exposure of the paper to the negative's darker image, and all is well again.

Shooting weddings on color neg, I routinely under-rating set my exposures, to avoid muddy colors in the shadows. ISO 160 film might be exposed to EI 100, for example