Step 1: Prepare the Crust. In a medium bowl, combine graham cracker crumbs and melted butter until well mixed. Press the mixture evenly into the bottom of a 9x13 inch baking dish or a 9-inch springform pan.
Step 2: Chill the Crust. Place the crust in the refrigerator while you prepare the filling, for at least 15 minutes.
Step 3: Prepare the Cream Cheese Filling. In a large mixing bowl, beat the softened cream cheese with an electric mixer until smooth and creamy. Gradually add the powdered sugar and vanilla extract, beating until fully incorporated and no lumps remain.
Step 4: Whip the Heavy Cream. In a separate, chilled bowl, whip the cold heavy cream with an electric mixer on medium-high speed until stiff peaks form. Be careful not to over-whip.
Step 5: Combine Fillings. Gently fold the whipped cream into the cream cheese mixture until just combined. Do not overmix.
Step 6: Color the Filling. Divide the cream cheese mixture into 3-4 separate bowls. Add a few drops of different gel food coloring to each bowl (e.g., blue, pink, yellow, green) and gently fold until the color is evenly distributed.
Step 7: Assemble the Swirl Dream. Remove the chilled crust from the refrigerator. Drop spoonfuls of the different colored cream cheese mixtures randomly over the crust. Once all colors are added, use a knife or skewer to gently swirl the colors together a few times. Don't overdo it, or the colors will blend too much. Sprinkle the assorted candies evenly over the top.
Step 8: Chill the Dessert. Cover the dish with plastic wrap and refrigerate for at least 4 hours, or preferably overnight, until firm.
Step 9: Serve and Enjoy! Once firm, slice and serve your beautiful Candy Swirl Dream. Enjoy the creamy, colorful delight!