text: This test performs a check that :valid/:invalid CSS psudo selectors are lively applied by HTMLSelectElement::setSelectedIndexByUser.
  
  On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
  
  
  Change the value of a menulist select by setSelectedIndexByUser:
  PASS backgroundOf(el) is validColor
  PASS backgroundOf(el) is invalidColor
  Change the value of a listbox select by setSelectedIndexByUser:
  PASS backgroundOf(el) is invalidColor
  PASS backgroundOf(el) is validColor
  PASS successfullyParsed is true
  
  TEST COMPLETE
  
  