1. Install the apk
2. When it's done, wait a moment. Then check your theme store.
3. Choose the theme. Then tap on purchase. Dont worry its free.
4. Then it goes to another theme, but dont worry. Let the theme download automatically.
5. Apply the themes.
This theme is based on a theme in Samsung Theme Store which named Simple Gold by Samsung Electronic. So, before install this theme, make sure Simple Gold by Samsung Electronic is not installed. By the way, i very appreciate Simple Gold by Samsung Electronic. I just edit the wallpaper and the some icons.
Screen Shots:
This work on my Galaxy J5.
Link : http://sh.st/LOycl