Requires iOS 7 or later.
Afters Safari Enhancer success i decided to make an alternative tweak for messages with cool new features and they are:
-Auto load messages(HISTORY)
-Im Not Typing(doesn't show that you are typing)
-No Search Bar(disable's search bar)
-No Rotate( disable auto rotation)
-No Separators(remove Separators for a cleaner look)
-Black Keyboard
-Blue Keyboard
-SendLargeAttachments
Note: if Blue Keyboard didn't work go to mobile/library/caches and delete com.apple.keyboards
Configure options from Settings.