Import the whole project into android studio and you're go to go.
Color scheme: This allows you change the app color scheme to a different color. You can do that by navigating to app/src/main/res/values/color.xml and change from the default (red) color to any color of your choice.
Images: The images or picture used in this template can be changed if the user wants to. To do that go to app/src/main/res/drawable
Backend: Kindly follow the documentation file added, you will be good to go
For any more info you can contact me: [email protected]