Change the screen brightness and page appearance to make the text easier to read.

1. While reading a eBook, Tap the centre of the page to bring up the Reading Menu.
2. Tap the "Aa" icon.
3. Adjust Brightness: Under Tone, drag the slider to adjust your screen's brightness level.
   • Slide left to reduce brightness.
   • Slide right to increase brightness.
4. Page Colour Tap the reading theme you want to use. If you're reading at night, the Night theme is specially designed to make it easier to read by displaying white letters on a black background.
5. Preview Changes, the background colour of your eBook will change instantly, adjust the slider or tone again if needed until its comfortable for you eyes. 
6. To save your settings and resume reading, tap X.