Altering the display settings in Windows can make the screen visibility more accessible to people with poor vision. This process of dramatically altering the colour and contrast settings of Windows is called colour inversion. It is important to note that enabling colour inversion in Windows is not permanent. Below are steps to enable or disable the colour inversion setting through the Windows Control Panel.
Open your Start menu in Windows and select the Control Panel option. Select the Accessibility Options category from the menu.
Click on the first "Task" in the Accessibility Options menu, which reads "Adjust the contrast for text and colours on your screen;" this will open a new window.
Toggle the box next to the words "Use High Contrast." If the box is checked, it will enable colour inversion--unchecked is the standard colour scheme.
Click the "Apply" button in the bottom-right corner of the window to enable the selected colour setting.
A quick keyboard shortcut can be used by pressing the combination of the Windows key+C to open the Control Panel menu.