The video shows a person using an app on their phone to change the color of their icons. The app is called iColorizeLabel, and the person is using it to change the color of the icons on their home screen. The person is seen scrolling through different colors and selecting one. The video is shot in a close-up view, focusing on the phone screen and the person's finger as they interact with the app. The colors of the icons change as the person selects different options in the app.