Android App Customization

I'm looking for an Android developer to customize an open-source application. The modifications will include:
- Renaming the app
- Changing the app icon
- Adjusting the app's color scheme
- Creating a splash screen

https://github.com/pretix/pretixscan-android

Here is the App open-source github
The app currently comprises two screens. No additional features are required, just the modifications listed above.