The feature in question pertains to a visual setting within the WhatsApp application on Apple’s mobile operating system. This setting adjusts the application’s color scheme to primarily dark hues. For example, the background shifts from a light color, such as white or light grey, to a darker shade, such as black or dark grey. This impacts the appearance of the interface, including chat windows, menus, and settings screens.
This visual modification is significant due to several factors. It can potentially reduce eye strain, particularly in low-light environments. It may also contribute to battery conservation on devices with OLED screens, as darker pixels require less power to illuminate. Historically, this type of setting has been implemented across various applications and operating systems to address user concerns regarding visual comfort and energy efficiency.