How to save selected option(dropdown box) in AngularJS

I want to save selected color in $scope.color.

Index.html:

<label class="item item-select" name="selectName">
                <span class="input-label">What is your favourite colour?</span>
              <select id="colorid">
                <option ng-repeat="x in colorList"{{x}}</option>
              </select>
            </label>

controller.js:

    var colorCtrl = function($scope){
    $scope.color = "";
    $scope.colorList =["red","blue","yellow"

      ];
    }