Philips 225BI Electronic User's Manual page 54

Color menu:
Color Menu allow you to adjust RGB, Black Level, White Point, Color Calibration, and
SmartImage (Please refer to SmartImage section).
You can follow the instruction and do the adjustment.
Refer to below table for sub-menu item base on your input.
Tab Heading Sub Menu
Color RGB
Color Black Level
Color White Point
Color Color Calibration
Color Viewing Mode
Display in Analog Display in Digital
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Example for Color
Calibration