Unwanted color can be caused by factors such as inconsistent lighting conditions during a shoot. This can result in images that contain unnatural looking colors or one predominant color, which gives the image an unwanted color cast. You can suppress the unwanted color using the Suppression feature in the Color Curves.
Use the Suppress toggle button to activate the color suppression curve. Use the Color Suppression color pot next to the Suppress button to set a color suppression target using the color picker.
With the color suppression target set, modify the shape of the color suppression curve along the hue range that you want to suppress.