title: Pycharm color highlighting for function arguments with default values
body: <p>I have a very annoying problem with my color-scheme in Pycharm (I'm using 5.03 on Arch Linux).</p>
  
  <p>So my arguments with default values not highlighted. For example this code:</p>
  
  <pre><code>class Profit:
  
      def __init__(self, date=datetime.date.today(), amount=0.0, currency='sdf'):
          self.date = date
          self.amount = amount
          self.currency = currency
  </code></pre>
  
  <p>However, when I type quote and variable itself, it becomes green (I use darcula theme) for a short moment and then color gone. Same goes with default int variable, it becomes blue just for a moment.</p>
  
  <p>I've tried to drop all settings, invalidate cache and reinstall Pycharm from scratch, nothing helps me.</p>
  
  <p>All other highlighting works good.</p>
  
  <p>P.S. even StackOverflow highlights it.</p>