Ryan Petrich is a developer of tweaks and applications for Cydia, and in a repo specially made for iOS 6 he published 3 tweaks that are meant to modify the native functionality of our iDevices. These aren't the first iOS 6 tweaks anyone has developed, the first tweak being released last week by a Russian. Back to the topic, AntiTint, TinyCycler si Unlock iOS 6 Maps are the tweaks made by Petrich. The first should disable the new color/changing color of the status bar in iOS 6, the second should randomly change their color and the last one activates the FlyOver 3D function on iDevices that cannot run it. Practically the last tweak is identical to this one, the only difference being that it can be installed from Petrich's repo.
iOS 6 can be jailbroken with this tutorial si You can install Cydia with this tutorial, but you can only jailbreak iPhone 3GS/4 and iPod Touch 4G. The repo where you can find those tweaks is: http://rpetri.ch/ios6/.
