Preheat oven to 375°F.
Place cinnamon rolls sideways on a large cookie sheet that has been greased or lined with a silicone mat. Arrange cinnamon rolls in a circular pattern. It should look like a flower when you're done. Press down on cinnamon rolls with your hand to flatten them slightly.
Bake according to package instructions. Let cool.
Frost with the buttercream that comes with the cinnamon rolls. Add yellow, green and purple sugar. Serve immediately or store covered for up to 24 hours at room temperature. It is best when eaten the first day.