Preheat oven to 325°F. Add cupcake liners to a pan and spray with non-stick spray. Mix Oreo crumbs with melted butter and divide into cups, pressing into the bottoms. Bake for 5 minutes and let cool. Lower oven to 300°F. Beat cream cheese, sugar, and flour until smooth. Mix in sour cream and vanilla. Add eggs one at a time, scraping sides. Divide batter into three bowls; leave one plain, color the others yellow and orange. Layer batters into crusts, starting with yellow, then orange, then white. Bake for 15 minutes, then turn oven off and leave closed for 10 minutes. Cool cheesecakes in fridge. Whip heavy cream with powdered sugar and vanilla, tint with orange. Decorate cheesecakes with whipped cream and toppers.