Ai, that's hard to explain I think. Ill try.
Colours change when you are indoors and, for example, in bright sun.
The human eye changes by itself to the colour, but a camera doesnt.
So, youve to tell where the camera is at that moment: Inside, outside etc.
So, the camera can change its ''eye'' to what we're seeing.
Panasonic DMC-FZ18, Panasonic DMC-FZ28, Canon G5, Canon 350D, Canon 50D + BG-E2N
Tamron 17-50 2.8, Canon EF 70-200mm f/4L USM,
Canon 18-55 II plus lots of Minolta MD/M42 lenses and bodies