Adjust the contrast
You can adjust the contrast of windows and buttons so that they're easier to see. This is not the same as changing the brightness of the whole screen; only parts of the user interface will change.
Click your name on the top bar and select System Settings.
Open Universal Access.
Under Display select the Contrast that best suits your needs. Low will make things less vivid, for example.
You can quickly change the contrast by clicking the universal access menu on the top bar and selecting Enhance contrast in colors.
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See Also
- How can I make the screen brighter? — Laptops and desktop monitors usually have buttons that you can press to change the brightness.