Canon MX450 series Online Manual page 97

It is usually difficult to correct the image completely by adjusting only one color pair. It is recommended that
you find a portion in the image where it should be white, and adjust all three color pairs so that the portion
turns white.
You can also enter a value (-127 to 127).
Below is an example of an image in which the "Cyan & Red" pair has been adjusted.
Cyan is increased Red is increased