Based on my testing, @Environment(\.colorScheme) starting from iOS 26 behaves differently for Live Activities: Inside the Dynamic Island, it always returns .dark. For the banner / Lock Screen section, the value appears to be determined by the current wallpaper/background context rather than the system Light/Dark Mode setting. For example, a light-colored wallpaper should result in .light.

Based on my testing, @Environment(\.colorScheme) starting from iOS 26 behaves differently for Live Activities: Inside the Dynamic Island, it always returns .dark. For the banner / Lock Screen section, the value appears to be determined by the current wallpaper/background context rather than the system Light/Dark Mode setting. For example, a light-colored wallpaper should result in .light.