calorieController.js

(function() {
  angular
    .module('foodApp')
    .controller('calorieCtrl', calorieCtrl);
  
  function calorieCtrl() {
    var vm = this;
    
    vm.styleCalorieInput = {
      "background-color": "#3cb9c6",      
      "border-color": "transparent",      
      "border-radius": "10px"
    };
    
    vm.styleError = {
      "color": "#f3c4a3"
    };
    ...
}();