Canon MX720 series Online Manual page 104

Below is an example of correcting a bluish image.
Since Blue and Green are too strong, click the Yellow and Magenta arrows to correct.
Before
Note
Color adjustments are applied only to the cropping frames (scan areas) or the frame selected in
thumbnail view.
You can select multiple frames or cropping frames by clicking them while pressing the Ctrl key.
You can also select a color tone from the color pattern displayed on the left of the Color Pattern
screen.
You can also use this function to add a specific tint to an image. Increase the magenta to add a warm
tint, and increase the blue to add a cool tint.
After