Press the [Copy] key.
Press the [] key.
Press the [] or [] key to display [Color/Quality], and then press the [OK] key.
Press the [] or [] key to display [Color Balance], and then press the [OK] key.
Select a color, and then press the [OK] key.
Press [Lighter] or [Darker] to select the color you want to adjust.
Press the [OK] key.