On the samsung galaxy note 4 you can invert the screen color. To do this go into the settings on your galaxy note 4 and click on accessibility and then click direct access. Next make sure the top is turn on to the right and that negative colors is check marked. Then go back to the home screen and click the home button 3 times quickly and the screen on your samsung galaxy note 4 will invert. Its just a cool little trick hope you guys enjoyed the video.