Canon MG2500 series Online Manual page 71

The Manual Color Adjustment dialog box opens.
3. Adjust color balance
There are individual sliders for Cyan, Magenta, and Yellow. Each color becomes
stronger when the corresponding slider is moved to the right, and becomes weaker
when the corresponding slider is moved to the left. For example, when cyan becomes
weaker, the color red becomes stronger.
You can also directly enter a value linked to the slider. Enter a value in the range
from -50 to 50. The current settings are displayed in the settings preview on the left
side of the printer driver.
After adjusting each color, click OK.
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