private function _get_theme_status( $theme ) {
    $status = 'install';

    $installed_theme = wp_get_theme( $theme->slug );
    if ( $installed_theme->exists() ) {
      if ( version_compare( $installed_theme->get( 'Version' ), $theme->version, '=' ) ) {
        $status = 'latest_installed';
      } elseif ( version_compare( $installed_theme->get( 'Version' ), $theme->version, '>' ) ) {
        $status = 'newer_installed';
      } else {
        $status = 'update_available';
      }
    }

    return $status;
  }