title: Attempting to write protractor e2e test for theme selector
body: <p>I am new to Protractor and finding this a little difficult, I hope i can explain it and if you require any further information please let me know. </p>
  
  <p>So.. The app i am working on has a Default theme set to Black, there is then a drop down you can select in the navbar which gives you an option to select a different theme "White", I have been able to select the White theme successfully but i would like to know how to use this if the default theme were to be white or changed to white and then check that the theme Black is still working how could i write the e2e test to reflect that. </p>
  
  <p>I should mention that once a theme is selected it is then cached for 1 year so that theme remains unless changed.</p>
  
  <p>Code i have written to select Light theme</p>
  
  <pre><code>it('should select theme selector', () =&gt; {
           let top = element(by.css('cloudgate-theme-selector'));
           top.element(by.css('.dropdown-toggle')).click();
           element(by.cssContainingText('li a', 'Light')).click();
           browser.sleep(1000);
       });
  </code></pre>
  
  <p>Thank you for your help in advance.
  cheers,</p>