Apple accentuates several interfaces throughout iOS with a blurred background to help bring the overlaying interface into focus; key examples include Control Center, Folders, and Spotlight search, just to name a few.
Albeit aesthetically attractive, Apple could bring these blur effects into the modern age with the help of a darker color scheme. Fortunately, that’s something that a new free jailbreak tweak dubbed Blurbe by iOS developer dpkg_ brings to the table.