Creating Ultra gradients with flutter

In this tutorial, we will learn how to create ultra gradients in Flutter using custom code. The goal is to create an animated ultra gradient background for our app. We will start by creating a reusable Background Widget called UltraBackground. This widget will take a child widget as input. To achieve the ultra gradient effect, we will use a combination of linear gradients and opacity masks. We will also need to animate the gradient colors to create the desired effect. Finally, we will add the UltraBackground widget to our app and see the beautiful ultra gradient background in action.