The capability to switch the Viber application’s visual theme to a darker color palette on Apple’s mobile operating system provides a user interface that primarily uses dark grays and blacks. This functionality alters the appearance of the app’s menus, chat screens, and other interface elements, reducing the amount of bright light emitted by the device’s screen. As an example, the standard white background of a Viber chat window is replaced with a dark gray or black background, with text rendered in a lighter color for contrast.
The implementation of a subdued color scheme offers several advantages. It can contribute to decreased eye strain, particularly in low-light environments, and potentially conserve battery life on devices with OLED screens where dark pixels consume less power. Furthermore, some users find the darker interface aesthetically pleasing and prefer it over the standard light theme. The feature’s availability reflects a broader trend toward user customization and accessibility options within mobile applications.