[51Cards]

You may also find interesting that in this release update he mentiones that the backlight LED is now RGB and they are toying with ideas like making the backlight blue light aware at nights, etc.

[Karawebnetwork]

This would be interesting. I was gifted a Kindle with backlighting recently after my old first generation one broke. The backlight is useless to me because it shines blue, so I just use a candle.

[teekert]

FWIW, my PocketBook (Touch HD3) can shine in red. It has a most horrible book store though and microusb charging. Not sure what newer models offer.

[wan23]

Recent Kindles have a warm light feature to avoid this problem