If you're looking for a fun and colorful way to customize your SMS chat messenger, Pink Sms Messenger theme by Digital Upground Themes is the perfect app for you. This free app is available for Android users and falls under the Personalization category. It offers a pink unicorn theme that will give your SMS chat messenger a burst of color.

The app is straightforward to use, making it perfect for people who are not tech-savvy. In addition, the app provides free HD wallpapers that you can use to customize your device even further. To get started, download the app and press the "Open" button. Once you've opened the app, press the "Apply Theme" button, and you're all set! However, it's important to note that you need to have Switch SMS installed for the app to work correctly.