diff --git a/CONTRIBS.md b/CONTRIBS.md
index 5e0e2a68..0cfccf65 100644
--- a/CONTRIBS.md
+++ b/CONTRIBS.md
@@ -4,6 +4,7 @@ So far, these people have contributed:
 [blakjakau](https://github.com/blakjakau),
 [boombuler](https://github.com/boombuler),
 [breunigs](https://github.com/breunigs),
+[cathesaurus](https://github.com/cathesaurus),
 [ccjon](https://github.com/ccjon),
 [cmrn](https://github.com/cmrn),
 [epf](https://github.com/epf),
@@ -25,4 +26,4 @@ So far, these people have contributed:
 [vita10gy](https://github.com/vita10gy),
 [Xelio](https://github.com/Xelio),
 [ZauberNerd](https://github.com/ZauberNerd),
-[waynn](https://github.com/waynn)
\ No newline at end of file
+[waynn](https://github.com/waynn)
diff --git a/plugins/portal-highlighter-imminent-decay.user.js b/plugins/portal-highlighter-imminent-decay.user.js
new file mode 100644
index 00000000..7e7b55f2
--- /dev/null
+++ b/plugins/portal-highlighter-imminent-decay.user.js
@@ -0,0 +1,64 @@
+// ==UserScript==
+// @id             iitc-plugin-highlight-imminent-decay@cathesaurus
+// @name           IITC plugin: highlight portals with resonators about to decay
+// @category       Highlighter
+// @version        0.1.0.@@DATETIMEVERSION@@
+// @namespace      https://github.com/jonatkins/ingress-intel-total-conversion
+// @updateURL      @@UPDATEURL@@
+// @downloadURL    @@DOWNLOADURL@@
+// @description    [@@BUILDNAME@@-@@BUILDDATE@@] Uses the fill color of the portals to show resonators due to decay within the next day. Red = portal will decay completely, orange = portal will drop all links, yellow = one or more resonators will decay completely.
+// @include        https://www.ingress.com/intel*
+// @include        http://www.ingress.com/intel*
+// @match          https://www.ingress.com/intel*
+// @match          http://www.ingress.com/intel*
+// @grant          none
+// ==/UserScript==
+
+@@PLUGINSTART@@
+
+// PLUGIN START ////////////////////////////////////////////////////////
+
+// use own namespace for plugin
+window.plugin.portalHighlighterImminentDecay = function() {};
+
+window.plugin.portalHighlighterImminentDecay.highlight = function(data) {
+  var d = data.portal.options.details;
+  if(getTeam(d) !== 0) {
+    //Check the energy of every resonator.
+    var resImminentDecayCount = 0;
+    var resCount = 0;
+    $.each(d.resonatorArray.resonators, function(ind, reso) {
+      if(reso !== null) {
+        var level = parseInt(reso.level);
+        var maxResonatorEnergy = window.RESO_NRG[level];
+        var currentResonatorEnergy = parseInt(reso.energyTotal);
+        if((currentResonatorEnergy / maxResonatorEnergy) < 0.15) {
+          resImminentDecayCount++;
+        }
+        resCount++;
+      }
+    });
+
+    if(resImminentDecayCount > 0) {
+      if(resImminentDecayCount === resCount) {
+        var color = 'red';
+      } else if((resCount - resImminentDecayCount) < 3) {
+        color = 'orange';
+      } else {
+        color = 'yellow';
+      }
+      // Apply colour to portal.
+      var params = {fillColor: color, fillOpacity: 1};
+      data.portal.setStyle(params);
+    }
+  }
+  window.COLOR_SELECTED_PORTAL = '#f0f';
+}
+
+var setup =  function() {
+  window.addPortalHighlighter('Imminent Decay', window.plugin.portalHighlighterImminentDecay.highlight);
+}
+
+// PLUGIN END //////////////////////////////////////////////////////////
+
+@@PLUGINEND@@