public Icon getRendererIconByIndex(int i) {
    final HighlightSeverity severity = getSeverityByIndex(i);
    HighlightDisplayLevel level = HighlightDisplayLevel.find(severity);
    if (level != null) {
      return level.getIcon();
    }

    return HighlightDisplayLevel.createIconByMask(myRendererColors.get(severity.getName()));
  }