title: Type annotations for Enum attribute
body: <p>I have this piece of code:</p>
  <pre><code>import enum
  
  
  class Color(enum.Enum):
      RED = '1'
      BLUE = '2'
      GREEN = '3'
  
  
  def get_color_return_something(some_color):
      pass
  </code></pre>
  <p>How do I properly add type annotations to the <code>some_color</code> variable in this function, if I suppose that I'll receive an enum attribute from the Color enum (for example: <code>Color.RED</code>)?</p>