diff --git a/src/panel-triggers/editor.html b/src/panel-triggers/editor.html
index f0ac480..ea3333c 100644
--- a/src/panel-triggers/editor.html
+++ b/src/panel-triggers/editor.html
@@ -291,7 +291,7 @@
       </ul>
       <div class="clearfix"></div>
     </div>
-    <div class="tight-form last">
+    <div class="tight-form">
       <ul class="tight-form-list">
         <li class="tight-form-item"
             ng-style="{background:editor.panel.okEventColor}"
@@ -307,5 +307,31 @@
       </ul>
       <div class="clearfix"></div>
     </div>
+    <div class="tight-form last">
+      <ul class="tight-form-list">
+        <li class="tight-form-item"
+            ng-style="{background:editor.panel.ackEventColor}"
+            style="width: 160px; color: white">
+          <span style="padding-left: 25px"> Acknowledged color </span>
+        </li>
+        <li class="tight-form-item">
+          <spectrum-picker
+            ng-model="editor.panel.ackEventColor"
+            ng-change="editor.panelCtrl.refresh()">
+          </spectrum-picker>
+        </li>
+        <li class="tight-form-item last" style="width: 28px">
+          <label class="checkbox-label" for="ack-event-color"></label>
+            <input  class="cr1"
+                    id="ack-event-color"
+                    type="checkbox"
+                    ng-model="editor.panel.markAckEvents"
+                    ng-checked="editor.panel.markAckEvents"
+                    ng-change="editor.panelCtrl.refresh()">
+            <label for="ack-event-color" class="cr1"></label>
+        </li>
+      </ul>
+      <div class="clearfix"></div>
+    </div>
   </div>
 </div>
diff --git a/src/panel-triggers/module.js b/src/panel-triggers/module.js
index b8bb307..32ca76f 100644
--- a/src/panel-triggers/module.js
+++ b/src/panel-triggers/module.js
@@ -48,6 +48,7 @@ var panelDefaults = {
   showEvents: { text: 'Problems', value: '1' },
   triggerSeverity: defaultSeverity,
   okEventColor: 'rgba(0, 245, 153, 0.45)',
+  ackEventColor: 'rgba(0, 0, 0, 0)'
 };
 
 var triggerStatusMap = {
@@ -183,6 +184,11 @@ class TriggerPanelCtrl extends MetricsPanelCtrl {
                       ack.user = ack.alias + ' (' + ack.name + ' ' + ack.surname + ')';
                       return ack;
                     });
+
+                    // Mark acknowledged triggers with different color
+                    if (self.panel.markAckEvents && trigger.acknowledges.length) {
+                      trigger.color = self.panel.ackEventColor;
+                    }
                   }
                 });