The system input method on Apple’s mobile operating system, when rendered with a dark color scheme, provides an alternative visual experience for users. This interface modification inverts the typical light-on-dark presentation, offering a darker background with lighter characters.
This stylistic choice can reduce eye strain, particularly in low-light environments, and contribute to a more visually consistent experience when employing dark mode across the operating system and compatible applications. Historically, options for customizing system-wide color schemes were limited, leading to this development becoming a popular feature request and eventually a standard offering.