Sony DSC-W90 - Manual (Page 9)

9
Basic techniques for better images
The apparent color of the subject is affected by the lighting conditions.
Example: The color of an image affected by light sources
The color tones are adjusted automatically in the auto adjustment mode.
However, you can adjust color tones manually with [White Bal] (page 45).
Color On the effects of lighting
Weather/lighting Daylight Cloudy Fluorescent Incandescent
Characteristics of
light White (standard) Bluish Green-tinged Reddish