Your vision sort of does auto white balance making surrounding room light the norm. If your room lighting is matching old incandescent light 2700K color temperature producing a more warm orange light the daylight balanced glow light will look blue. If your reading in day light the glow light will look white.
Stop fixating on screen and glow light color and just read. You will soon put this color non problem back into it's secondary place. We all have read without problems paper back books and news papers with far from white paper to words on bright white, pink, yellow, orange and blue paper without giving paper color much thought.
http://en.wikipedia.org/wiki/Color_temperature