Requires iOS 7
AppDye is a tweak that will allow you to dye or tint that blue iOS7 color to any color of your choice. You can also use the current app's icon color for a more dynamic look! Below is a list of the settings:
+ Enabled
+ Dye SMS
+ Dye Keyboard
+ Dye Statusbar
> Disable in Applications
> Dye Color
> Use Icon Color
Configure options from Settings.
See larger Screenshots below..