"Painfully Obvious Modraters" - Because sometimes (http://meta.stackoverflow.com/q/220442/223030) a diamond just isn't enough.

modrater.user.js

// ==UserScript==
// @name Painfully Obvious Modraters
// @description For those who can't see diamonds.
// @namespace michaelb958
// @author michaelb958
// @license MIT (http://opensource.org/licenses/MIT)
// @include *://*.stackexchange.com/*
// @include *://*.stackoverflow.com/*
// @include *://*.serverfault.com/*
// @include *://*.superuser.com/*
// @include *://*.stackapps.com/*
// @include *://*.askubuntu.com/*
// @include *://*.mathoverflow.net/*
// ==/UserScript==

function with_jQuery(f) {
  var s = document.createElement("script");
  s.type = "text/javascript";
  s.textContent = "(" + f.toString() + ")(jQuery)";
  s.setAttribute('data-with-jquery', '');
  document.head.appendChild(s);
};

with_jQuery(function($) {
  $('.post-signature:has(.mod-flair)').addClass('obvious-modrater');
  $('<style type="text/css">')
    .text('.obvious-modrater { border-style: dashed; border-width: 10px; margin: 10px; border-color: transparent; } .obvious-modrater-red { position: absolute; color: white; background-color: red; z-index: 999; font-size: 40px; text-align: center; vertical-align: middle; line-height: 100%; visibility: hidden; }')
    .appendTo(document.head);
  var counter = -1, interval = setInterval(function() {
    try {
      counter = (counter + 1) % 16;
      var modraters = $('.obvious-modrater'), css = {},
          ifodd = function(y, n) { return counter % 2 ? y : n; };
      modraters.each(function() {
        if ($('.obvious-modrater-red', this).length) return true;
        var o = $(this).offset();
        $('<div class="obvious-modrater-red">Modrater</div>')
          .css({top: o.top, left: o.left,
                height: $(this).outerHeight(),
                width: $(this).outerWidth()})
          .prependTo(this);
      });
      if (counter < 6) {
        css.visibility = '';
        css.borderColor = ifodd('', 'red');
      } else if (counter < 12) {
        css.borderTopColor = css.borderBottomColor = ifodd('', 'red');
        css.borderLeftColor = css.borderRightColor = ifodd('red', '');
      } else if (counter < 16) {
        if (counter == 12) css.borderLeftColor = css.borderRightColor = '';
        css.margin = '10px';
        css.visibility = 'hidden';
        $('.obvious-modrater-red', modraters).css('visibility', ifodd('', 'visible'));
      } else {
        throw "Counter out of bounds [0,16): bug!";
      }
      modraters.css(css);
    } catch (e) {
      clearInterval(interval);
      throw e;
    }
  }, 500);
})(jQuery);