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Old 08-30-2018, 01:59 PM   #2
Adoby
Handy Elephant
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Posts: 1,737
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Join Date: Dec 2009
Location: Southern Sweden, far out in the quiet woods
Device: Samsung Galaxy Tab S8 Ultra
No, but you can install a blue light filter program on your PC. Then it works not only for calibre but for all other programs as well.

I have one on my Ubuntu Laptop. But there are also for Windows, OS X and Android.

Or you just change the color settings in the reader and save it as a theme. And switch themes, with different color/temperature tints, whenever you feel like it.

Last edited by Adoby; 08-30-2018 at 02:03 PM.
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