While reading an e-book about Windows Phone programming, I came across a paragraph that caught my attention. From Microsoft Press’ e-book titled Programming Windows Phone 7, it stated that:
<span style="color: #0000ff;"><strong>OLEDs are different from flat displays of the past inthat power consumption isproportional tothe light emitted from the display.Forexample,an OLED display consumes less than half the power of an LCD display of the same size,but only when the screen ismostly black.Foran all-white screen,an OLED consumes more than three times the power of an LCD.</strong></span>
<span style="color: #0000ff;"><strong>Because battery life isextremely important on mobile devices,thischaracteristic of OLED displays implies an aesthetic of mostly black backgrounds with sparse graphics andlight-stroked fonts.Regardless,Windows Phone7users can choose between two major color themes:light text onadark background,ordark text onalight background.</strong></span>
This tidbit is very informative. This could be why the default background color of smart phones is black. What do you think?