Check out my smart noise reduction script for pictures taken from cheaper cameras or in bad lighting conditions, and couple of other scripts.
Smart noise reduction allows to reduce digital noise but results will be shown in three layers: shadows, highlights and midtones. Each layer will have a mask where you can erase parts that you think have color abberations, so you getting very flexible tool for enhancing your pictures.
http://www.dgpro.net/index.php/creative ... -reduction