title: How to stop InteliJ IDEA to highlight the identifier under the caret
body: <p>While typing with IntelliJ IDEA the identifier under the caret is highlight with a very ugly turquoise background. And all occurrences of identifier in a different shade of turquoise.</p>
  
  <p>This can be helpfully. But not with that obtrusively ugly colour. And not right while I type. </p>
  
  <p>Is there any way to configure that pain to become useful? A different colour might be nice. Or 2 sec delay. Perfect would be both.</p>
  
  <p>Or if this is not possible then I rather live without and would like to know how to switch it of completely.</p>
  
  <p>Thanks for any hint.</p>