The lens designer can minimize these color artifacts in the image by using
different glass types in alternating lens elements.
If your image is evaluated in the grey level domain only, then you can rely on the influence that color artifacts have on MTF. Regarding MTF alone will supply enough information so that you can assess the lens safely.
But if the image is going to be evaluated in color, then you'd better carefully consider the effect of colored edge artifacts. They might render the lens unusable.