diff --git a/notebook/static/notebook/js/cell.js b/notebook/static/notebook/js/cell.js
index 963a856ec5..809143efc7 100644
--- a/notebook/static/notebook/js/cell.js
+++ b/notebook/static/notebook/js/cell.js
@@ -299,6 +299,7 @@ define([
                     this.element.removeClass('marked');
                 }
             }
+            this.events.trigger('cell:marking-changed', {cell:this, value:value});
         }
     });
 
diff --git a/notebook/static/notebook/js/notebook.js b/notebook/static/notebook/js/notebook.js
index 27d3a49c10..8311053335 100644
--- a/notebook/static/notebook/js/notebook.js
+++ b/notebook/static/notebook/js/notebook.js
@@ -186,6 +186,11 @@ define(function (require) {
     Notebook.prototype.bind_events = function () {
         var that = this;
 
+        this.events.on('cell:marking-changed', function(){
+            console.log('trigger');
+            that.update_marked_status();
+        });
+
         this.events.on('set_next_input.Notebook', function (event, data) {
             if (data.replace) {
                 data.cell.set_text(data.text);
@@ -621,6 +626,7 @@ define(function (require) {
     Notebook.prototype.toggle_cells_marked = function(cells) {
         cells = cells || this.get_cells();
         cells.forEach(function(cell) { cell.marked = !cell.marked; });
+        this.update_marked_status();
     };
     
     /**
@@ -630,6 +636,7 @@ define(function (require) {
     Notebook.prototype.mark_all_cells = function(cells) {
         cells = cells || this.get_cells();
         cells.forEach(function(cell) { cell.marked = true; });
+        this.update_marked_status();
     };
     
     /**
@@ -638,6 +645,7 @@ define(function (require) {
      */
     Notebook.prototype.unmark_all_cells = function(cells) {
         this.get_marked_cells(cells).forEach(function(cell) { cell.marked = false; });
+        this.update_marked_status();
     };
     
     /**
@@ -728,8 +736,18 @@ define(function (require) {
         var selectedIndex = Math.min(Math.max(this.get_selected_index() + offset, 0), this.ncells()-1);
         this.select(selectedIndex);
         this.get_selected_cell().marked = true;
+        this.update_marked_status()
     };
 
+    Notebook.prototype.update_marked_status = function(){
+        var indicies = this.get_marked_indices();
+        if ( indicies.length === 0){
+            this.element.removeClass('jp-marking');
+        } else {
+            this.element.addClass('jp-marking');
+        }
+    }
+
     // Cell selection.
 
     /**
@@ -1018,6 +1036,7 @@ define(function (require) {
         this.set_dirty(true);
 
         return this;
+        this.update_marked_status();
     };
 
     /**
@@ -1061,6 +1080,7 @@ define(function (require) {
             this.undelete_index = null;
         }
         $('#undelete_cell').addClass('disabled');
+        this.update_marked_status();
     };
 
     /**
@@ -1484,6 +1504,7 @@ define(function (require) {
             new_cell.set_text(texta);
             new_cell.marked = cell.marked;
         }
+        this.update_marked_status();
     };
 
     /**
diff --git a/notebook/static/notebook/less/cell.less b/notebook/static/notebook/less/cell.less
index 3f9d566fcb..983af40486 100644
--- a/notebook/static/notebook/less/cell.less
+++ b/notebook/static/notebook/less/cell.less
@@ -1,3 +1,10 @@
+._marked_style(@n) {
+
+    border-left-color: @marked_border_color;
+    border-left-width: @n;
+    padding-left: 6px-@n;
+}
+
 div.cell {
     border: 1px solid transparent;
     .vbox();
@@ -7,13 +14,39 @@ div.cell {
     border-style: solid;
 
     &.selected {
-        border-color: @border_color;
+        border-color: transparent;
         /* Don't border the cells when printing */
         @media print {
             border-color: transparent;
         }
     }
 
+    .command_mode .jp-marking &.selected {
+
+        /* Don't border the cells when printing */
+        @media print {
+            border-color: transparent;
+        }
+
+        ._marked_style(2px);
+
+        &.marked {
+          border-left-color: @marked_border_color;
+          ._marked_style(4px);
+        }
+
+
+
+    }
+
+    .command_mode  &.selected {
+
+        ._marked_style(2px);
+
+    }
+
+
+
     .edit_mode &.selected {
         border-color: green;
 
@@ -24,9 +57,7 @@ div.cell {
     }
     
     &.marked {
-        border-left-color: @marked_border_color;
-        border-left-width: 3px;
-        padding-left: 3px;
+        ._marked_style(3px);
     }
 
     width: 100%;