A color
cast is an unpleasant color shift in a photo. For example,
a photo taken indoors without a camera flash may have too much yellow.
The Remove Color Cast command changes the overall mixture of colors
to remove color casts from an image.
Original (left), and after removing the green color cast (right)
Choose Enhance > Adjust Color >
Remove Color Cast.
In your image, click an area that should be white, black,
or neutral gray. The image changes based on the color you selected.
To start over, and undo the changes made to the image,
click the Reset button.