Light/Shadow is used for lightening dark areas (shadow) and darkening bright areas (lights), too.
Light and Shadow have both two settings: Range and Gamma. If the range of the shadow is increased, the shadows will become a bit brighter and more saturated. If the shadow gamma is increased, the shadows will get much brighter. The light values act correspondingly: Range decreases the brightness slightly and increases the saturation, and Gamma decreases the brightness a lot.
Usually it is a good approach to find a good value for Gamma, so that the image has the correct brightness. If the colors are to pale now, you can decrease Gamma a bit and increase Range.