Mine is not 100% white, its more like a offwhite ever so slighty yellow.
So i got my good trusty screen calibrator and used it to check my screen and a friends iPad 2 has the "blue/white" colour.
The results? mine is allmost spot on while the blue/white screen is a bit to blue on all colours.
Google page? mine is white while the settings "app" has a slightly yellow tint