title: Alternate Between Two Colors For Text
body: <p>Is there a way to switch the color of a button every time it's clicked (for example, it starts off white, the first time it's clicked it turns blue, the next time it's clicked it turns back to white, if it's clicked a third time it goes to blue again... And on and on in the same pattern). </p>
  
  <p>If this is possible, is there a way for python to remember what color the button was the previous session, and stay that color the next time it's launched? </p>