I came accross this article –Smartphone users “go gray” to curb addiction which states
One such trick is “going gray,” or switching the screen to grayscale, a.k.a. black and white. This is a growing trend, according to Nellie Bowles in the New York Times. The whole idea is to make the screen far less attractive and appealing, thereby reducing the amount of time one is inclined to spend on it.
and I thought of how black and white the Windows Phone UI was. The live tiles had some colour, but thee rest of the UI was rarely anything other than black and white (mostly black). I can”t help but wonder now if that made it less attractive and appealing.