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In this video tutorial, Justine Flower explains how to change the text and background colors in a PDF for better readability, especially for those with visual impairments such as dyslexia. To do this, you need to access the preferences menu by clicking on "Edit" and then "Preferences." Under the "Accessibility" section, click on "Document Color Options" and select "Replace Document Colors." From there, you can choose custom colors for the background by clicking on the box next to it. This customization helps create a better contrast between font color and background color.
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