Color Mechanic is a selective color correction plug-in for Adobe Photoshop or Photoshop Elements. What makes Color Mechanic so powerful is that it lets you change one or more colors in an image without changing any other colors in the image and without the painstaking work of selecting the parts of the image you want to change.
This type of selective color correction is both easier to use and more powerful than conventional color balancing or filtration techniques that simply apply a uniform correction to the entire image or give you a few sliders to adjust.