Why might backgrounds and colors be changed in assistive technology devices?

Changing backgrounds and colors in assistive technology devices primarily aims to improve visibility for users with visual impairments. Many individuals may have specific visual needs, such as high contrast preferences or particular color sensitivities. By customizing colors and backgrounds to suit these needs, the usability and accessibility of the device are significantly enhanced, allowing users to interact with technology more effectively.

For instance, a high-contrast color scheme can help individuals with low vision discern text or icons more easily, thus facilitating a better user experience and aiding in their ability to navigate the interface independently. This action not only supports users with visual impairment but aligns with the principles of Universal Design, which seeks to make products more accessible to a broader audience.

Other options might address aspects of design or cost, but they do not focus on the essential goal of accessibility that is critical for users with varying levels of visual capability.