With the release of jailbreak tool, you can unlock the potential of your phone. And those who don't like the iOS 7 interface, they can apply Winterboard themes to get a new look. Space Blueberry is a newly released iOS 7 theme with really beautiful icons.
Space Blueberry isn't compatible with iPad, it's an iPhone only theme.
With the stock app icons, the theme contains icons for most of the popular third-party apps like Facebook, Instagram, Twitter, Spotify etc. except few. The app icons are really stunning. The designer of the theme highdetalio will be adding more icons in the next updates.
Since Space Blueberry is a Winterboard theme, you will not be able to apply this theme directly. You'll have to change the icons manually for all the apps. For that, you can use any File explorer like iFile or iExplorer.
You can download the theme from ModMyi's repository on Cydia. Remember that you'll have to apply the icons manually. Current release is v1.2 which can be downloaded from this Dropbox page, includes icons for VoiceMemos, Stocks, Facetime, iTunes, Newsstand, Passbook and Spotify.