`$(document).ready(function() {
    $('select.cars').bind(function(){
    $('.SubmitButton').addClass('ButtonColor');
    });
    });`

`<select class="cars">
      <option value="ferrari">Ferrari</option>
      <option value="lamborghini">Lamborghini</option>
      <option value="porsche">Porsche</option>
    </select>
      <input class="SubmitButton" type="submit" value="Go to Car">`