diff --git a/doc/site/style.css b/doc/site/style.css
index 7494d8b8..9076d529 100644
--- a/doc/site/style.css
+++ b/doc/site/style.css
@@ -146,7 +146,7 @@ PRE{
     margin-bottom:3px;
 }
 
-.menu {
+.menu, .site-menu {
     padding:23px 0 0 24px;
 }
 
diff --git a/index.html b/index.html
index a463d535..5031e00f 100644
--- a/index.html
+++ b/index.html
@@ -35,7 +35,7 @@
         <div id="wrapper"> 
             <div class="content"> 
                 <div class="column1"> 
-                    <div class="menu"> 
+                    <div class="site-menu"> 
                         <h4>User Resources</h4> 
                         <ul class="menu-list"> 
                             <li><a href="http://groups.google.com/group/ace-discuss">Ace Google Group</a></li> 
@@ -76,6 +76,7 @@
                             <li><a href='http://tryjasmine.com/'>Try Jasmine</a></li>
                             <li><a href="http://codebender.cc/">Codebender</a></li>
                             <li><a href="https://www.sharelatex.com">ShareLaTeX</a></li>
+                            <li><a href="http://www.khanacademy.org/cs/pascals-triangle/803149756">KhanAcademy</a></li>
                         </ul> 
                         <h4>Syntax Highlighters</h4> 
                         <ul class="menu-list"> 
diff --git a/lib/ace/theme/chrome.css b/lib/ace/theme/chrome.css
index 26863569..000c4e53 100644
--- a/lib/ace/theme/chrome.css
+++ b/lib/ace/theme/chrome.css
@@ -135,6 +135,10 @@ color:#FD971F;
   background: rgba(0, 0, 0, 0.07);
 }
 
+.ace-chrome .ace_gutter_active_line {
+    background-color : #dcdcdc;
+}
+
 .ace-chrome .ace_marker-layer .ace_selected_word {
   background: rgb(250, 250, 255);
   border: 1px solid rgb(200, 200, 250);
diff --git a/lib/ace/theme/dreamweaver.css b/lib/ace/theme/dreamweaver.css
index b01025a1..428b587a 100644
--- a/lib/ace/theme/dreamweaver.css
+++ b/lib/ace/theme/dreamweaver.css
@@ -17,7 +17,7 @@
 }
 
 .ace-dreamweaver .ace_fold {
-    background-color: #00F;
+    background-color: #757AD8;
 }
 
 .ace-dreamweaver .ace_text-layer {
diff --git a/lib/ace/theme/merbivore.css b/lib/ace/theme/merbivore.css
index 4ee7fa73..9b110778 100644
--- a/lib/ace/theme/merbivore.css
+++ b/lib/ace/theme/merbivore.css
@@ -14,7 +14,7 @@
 
 .ace-merbivore .ace_print_margin {
   width: 1px;
-  background: #e8e8e8;
+  background: #555651;
 }
 
 .ace-merbivore .ace_scroller {
diff --git a/lib/ace/theme/mono_industrial.css b/lib/ace/theme/mono_industrial.css
index 8f9056bb..5d282e83 100644
--- a/lib/ace/theme/mono_industrial.css
+++ b/lib/ace/theme/mono_industrial.css
@@ -9,12 +9,12 @@
 
 .ace-mono-industrial .ace_gutter {
   background: #1d2521;
-  color: #fff;
+  color: #C5C9C9;
 }
 
 .ace-mono-industrial .ace_print_margin {
   width: 1px;
-  background: #e8e8e8;
+  background: #555651;
 }
 
 .ace-mono-industrial .ace_scroller {
diff --git a/lib/ace/theme/monokai.css b/lib/ace/theme/monokai.css
index 7c3728ea..02d4fa9d 100644
--- a/lib/ace/theme/monokai.css
+++ b/lib/ace/theme/monokai.css
@@ -14,7 +14,7 @@
 
 .ace-monokai .ace_print_margin {
   width: 1px;
-  background: #e8e8e8;
+  background: #555651;
 }
 
 .ace-monokai .ace_scroller {
diff --git a/lib/ace/theme/solarized_dark.css b/lib/ace/theme/solarized_dark.css
index f55a1b1e..11eaba93 100644
--- a/lib/ace/theme/solarized_dark.css
+++ b/lib/ace/theme/solarized_dark.css
@@ -14,7 +14,7 @@
 
 .ace-solarized-dark .ace_print_margin {
   width: 1px;
-  background: #e8e8e8;
+  background: #33555E;
 }
 
 .ace-solarized-dark .ace_scroller {
diff --git a/lib/ace/theme/twilight.css b/lib/ace/theme/twilight.css
index 6b7df599..70794da6 100644
--- a/lib/ace/theme/twilight.css
+++ b/lib/ace/theme/twilight.css
@@ -9,7 +9,7 @@
 
 .ace-twilight .ace_gutter {
   background: #232323;
-  color: #F8F8F8;
+  color: #E2E2E2;
 }
 
 .ace-twilight .ace_print_margin {
diff --git a/lib/ace/theme/vibrant_ink.css b/lib/ace/theme/vibrant_ink.css
index 7aebc35c..08993a63 100644
--- a/lib/ace/theme/vibrant_ink.css
+++ b/lib/ace/theme/vibrant_ink.css
@@ -9,7 +9,7 @@
 
 .ace-vibrant-ink .ace_gutter {
   background: #1a1a1a;
-  color: white;
+  color: #BEBEBE;
 }
 
 .ace-vibrant-ink .ace_print_margin {