resources/colorSchemes/GraphQLLanguageDarcula.xml

<?xml version='1.0'?>
<list>
  <option name="GRAPHQL_UNUSED_FRAGMENT">
    <value>
      <option name="FOREGROUND" value="555555"/>
    </value>
  </option>
  <option name="GRAPHQL_BANG">
    <value>
      <option name="FOREGROUND" value="CC7832"/>
    </value>
  </option>
</list>