Restore WP separators

functions.php

/**
 * Restore Wordpress Separators
 */
function SLUG_admin_separators()
{
  echo '<style type="text/css">
    #adminmenu li.wp-menu-separator {margin: 0;}
    .admin-color-fresh #adminmenu li.wp-menu-separator {background: #444;}
    .admin-color-midnight #adminmenu li.wp-menu-separator {background: #4a5258;}
    .admin-color-light #adminmenu li.wp-menu-separator {background: #c2c2c2;}
    .admin-color-blue #adminmenu li.wp-menu-separator {background: #3c85a0;}
    .admin-color-coffee #adminmenu li.wp-menu-separator {background: #83766d;}
    .admin-color-ectoplasm #adminmenu li.wp-menu-separator {background: #715d8d;}
    .admin-color-ocean #adminmenu li.wp-menu-separator {background: #8ca8af;}
    .admin-color-sunrise #adminmenu li.wp-menu-separator {background: #a43d39;}
  </style>';
}
add_action( 'admin_head', 'SLUG_admin_separators' );