[Cableguy]

It has been brought up in another thread, and is suposed to be related to the maximum screen colors possible on the device...

WM5 and WM6 devices support up to 65k colors, but older devices may not support as many colors thus giving diferent relation colors for the R,G,B factors, being the only twoo "standart" colors the black (0,0,0) and the white (255,255,255) or what ever maximum values are alowed...