Thanks for valuable information.
Hey Google, let "f.lux" do it's job. We need that feature for system-wide.
Great Google Play Books, welcome to 21st century.
Try the app 'twilight' for android.
stobs, 16 Dec 2015does it turn black by midnight?nailed it!
Three hours and he hasn't finished a page... must a slow reader...
does it turn black by midnight?
Amazon has a similar feature for it's Kindle Voyage
I think that's good idea!
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