'ClearFolders' Removes the Blur From iOS 7 Folders for a Cleaner Appearance
Depending on whether you prefer iOS 7ís blur style in layers, or if you prefer the look of simplistic transparency, you might want to take a look at a new free jailbreak tweak dubbed ClearFolders
by iOS developer Sirifl0w.
As shown above, ClearFolders removes the blurred background from folders in iOS 7, giving it a transparent effect instead. You will see the title of the folder at the top of the display still, but rather than the blurriness getting in the way of your wallpaper, you can see right through your application icons to the wallpaper, just like if you were looking at your home screen.
On the flip side, you have to be a true minimalist to appreciate this tweak. Some might prefer the ability to see the border of the folder via the blurred background over the wallpaper, but in the end, this is completely up to you.
If you want to give ClearFolders a try, it's available right now for free in Cydia's ModMyi repository. The tweak doesn't have any options to configure.