Preheat your oven to the temperature indicated on your cake mix package, typically around 350°F (175°C). Prepare the cake batter by mixing the required eggs, oil, and water according to the instructions.

Divide the cake batter evenly into four bowls, and add pink, yellow, green, and blue gel food coloring. Stir gently until each bowl reaches the desired hue.

Pour each colored cake batter into pre-greased pans or bake them in batches if needed. Bake for about 25–30 minutes, or until a toothpick inserted in the center comes out clean. Allow the layers to cool completely.

In a large mixing bowl, whisk together the two boxes of instant pudding mix with 4 cups of cold milk until thickened, which should take about 2 minutes. Cover and refrigerate for at least 10 minutes.

Layer your trifle by starting with pastel cake cubes at the bottom, followed by a layer of pudding, and then a layer of whipped topping. Repeat until all ingredients are used.

Add another dollop of whipped topping on the top layer, and sprinkle mini chocolate eggs and pastel sprinkles generously. Optionally, place edible flowers on top.

Cover the assembled trifle and refrigerate for at least 1 hour before serving to allow the flavors to meld beautifully.