Easter Deserts Poke Cake

1 pkg (2-layer size) white cake mix 1 pkg (3 oz.) JELL-O Lime Flavor Gelatin 1 pkg (3 oz.) JELL-O Strawberry Flavor Gelatin 1 pkg (3 oz.) JELL-O Berry Blue Flavor Gelatin 1 pkg (4-serving_size) JELL-O Vanilla Flavor Instant Pudding 2 cups cold milk 1 tub (8 oz.) COOL WHIP Whipped Topping,tha