How do I change the colors on my iBook G4?

Is there a keyboard shortcut to mess around with the brightness, colors, etc? Somehow messed with my laptop and I want to change the colors back to normal.How do I change the colors on my iBook G4?
You need to explain what is not normal about the colors. Are the reds looking green and the yellows looking purple? Go to System Preferences %26gt; Universal Access. Select the ';Seeing'; tab. For ';Display';, select ';Black on white';.How do I change the colors on my iBook G4?
Paint.

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