title: Xcode 9 - Some folders marked with red text
body: <p>In my project, there are some folders that have red text.
  The project compiles and everything works, but I can't understand why only some folders have red text.</p>
  
  <p><a href="https://i.stack.imgur.com/eJdzU.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/eJdzU.png" alt="Folder with red text"></a></p>