There are several ways to remove a color cast in Photoshop and Photoshop Elements. The technique I describe below uses the Levels Command, but it cannot be done using an Adjustment Layer. This is is probably classified as destructive editing. However, it is easy and often is faster and better than other approaches. Here are the basic Steps:
- Open the image in the Full Editor.
- Duplicate the Background.
- With the duplicated layer active click on Filter > Blur > Average. The image now is a solid color that is the overall color cast of the image.
- Sample this with the Eyedropper Tool to set the Foreground color.
- Delete the solid color layer or turn off its visibility.
- With the Background Layer active, click on Enhancements > Adjust Lighting > Levels from the Menu bar.
- Click on the gray Eyedropper in the Levels dialog. Then click on the foreground Color square at the bottom of the Tool Box.
- Click Ok to exit the Levels Command.
The color cast is magically removed.
Here’s an example.