Print From Your Computer : Macintosh Printing (Mac OS X 10.4)

Select Color Options
You can choose how colors are managed in your printed photos.
Select Color Options from the pop-up menu.
Click  Advanced Settings, if necessary, to view all the options.
Manual Settings lets you select a color Mode for printing the colors in photos and graphics: EPSON Vivid or Adobe RGB.
You can also adjust Brightness, Contrast, Saturation, and individual Cyan, Magenta, and Yellow color tones.
Gamma adjusts the midtone density in the print (available only when using Adobe RGB).
ColorSync uses standard color profiles for your printer and paper to help match image colors. If you select this option, select ColorSync from the pop-up menu to continue customizing its use.
Off (No Color Adjustment) turns off printer software color adjustments so you can use the color adjustments in your program only.