This is not a standalone app, you need to download the LATEST version of GO SMS Pro app in order to apply this theme. (Search “GO SMS Pro” to download)
How to apply the theme:
1 - Install GO SMS (if not already)
2 - Install this theme
3 - Open GO SMS, Menu > Theme (in the General tab) -> Kitty RED
This version comes with upcoming update, more feature and graphic UI.
Other colors and variation:
For any question, comments or suggestion, please contact firstname.lastname@example.org