Rainbow cake with buttrcreme icing

Sugar, enriched bleached wheat flour (flour, niacin, reduced iron, thiamine mononitrate, riboflavin, folic acid), egg whites, vegetable shortening (palm and soybean oils, mono - and diglycerides, polysorbate 60), soybean oil, eggs, contains less than 2% of the following: high fructose corn syrup, leavening (sodium acid pyrophosphate, baking soda, monocalcium phosphate), wheat starch, modified tapioca and corn starch, propylene glycol mono and diesters of fats and fatty acids, whey (a milk derivative), salt, dextrose, rice flour, mono - and diglycerides, soy lecithin, water, natural and artificial flavor, yellow 5 lake, sodium caseinate (a milk derivative), red 40 lake, polysorbate 60, guar gum, xanthan gum, blue 1 lake, sodium stearoyl lactylate, palm oil, gum arabic, disodium phosphate, ascorbic acid, citric acid, carnauba wax, confectioner's glaze, yellow 6 lake.