如何使用jquery将select option值更改为submit按钮的颜色

<script src="https://cdn.jsdelivr.net/npm/jquery/dist/jquery.min.js"></script>

<select id="mySelect">
  <option value="red">Red</option>
  <option value="blue">Blue</option>
  <option value="green">Green</option>
</select>

<input type="submit" id="myButton" value="Submit">

$(document).ready(function() {
  $('#mySelect').change(function() {
    var selectedColor = $(this).val();
    $('#myButton').css('background-color', selectedColor);
  });
});

#myButton {
  padding: 10px 20px;
  color: white;
  border: none;
  cursor: pointer;
}