diff --git a/main/css/base_chamilo.css b/main/css/base_chamilo.css
index 119a0599ee..88dca33805 100755
--- a/main/css/base_chamilo.css
+++ b/main/css/base_chamilo.css
@@ -2608,6 +2608,8 @@ abbr {
     margin: 0 auto 35px auto;
 }
 
+/* Main tabs */
+
 #header3 ul {
     margin: 0px;
 }
@@ -2622,19 +2624,19 @@ abbr {
     background: none repeat scroll 0 0 #D9E4F0;
     border-top-left-radius: 5px;
     border-top-right-radius: 5px;
-    color: #277098;
+    /*color: #277098;*/
     display: block;
     padding: 8px 12px 9px;
     text-decoration: none;
 }
 
 #header3 li a:hover {
-    background: none repeat scroll 0 0 #8ECB50;
+    background: none repeat scroll 0 0 #ddd;
     color: #FFFFFF;
 }
 #header #current a {
-    background: none repeat scroll 0 0 #FFFFFF;        
+    background: none repeat scroll 0 0 #ccc;        
 }
 #header #current a:hover {
-    color: #277098;
-}
+    color: #fff;
+}
\ No newline at end of file
diff --git a/main/css/chamilo/default.css b/main/css/chamilo/default.css
index 18ea7e9534..5c7f9ce273 100644
--- a/main/css/chamilo/default.css
+++ b/main/css/chamilo/default.css
@@ -26,31 +26,19 @@ a:active {
 #header1 {
     background-image:url(images/bg-header1.gif);
 }
-#header3 {
-    /* background-image:url(images/bg-header4.png); */
-}
-#header4 {
-    /* background-image:url(images/bg-header4.png); */
-}
 
-#header3  a {
-    //background:transparent url(images/tab_left.gif) no-repeat scroll left top;
+#header3 li a:hover {
+    background: none repeat scroll 0 0 #8ECB50;
+    color: #FFFFFF;
 }
-
-#header3 li a span {
-//    background:transparent url(images/tab_right.gif) no-repeat scroll right top;
+#header3 #current a {
+    background: none repeat scroll 0 0 #FFFFFF;        
 }
-
-#current a {
-//    background:transparent url(images/tab_left-active.gif) no-repeat scroll left top;
+#header3 #current a:hover {
+    color: #277098;
 }
-#current {
-    //background:transparent url(images/tab_center-active.gif) no-repeat scroll right top;
-}	
 
-#current #tab_active {
-    //background:transparent url(images/tab_right-active.gif) no-repeat scroll right top;
-}
+
 /*****************************************************
  *  FOOTER STYLES                                    *
  *****************************************************/
diff --git a/main/css/chamilo_electric_blue/default.css b/main/css/chamilo_electric_blue/default.css
index bdf8598634..b76a4591f1 100644
--- a/main/css/chamilo_electric_blue/default.css
+++ b/main/css/chamilo_electric_blue/default.css
@@ -26,31 +26,20 @@ a:active {
 #header1 {
     background-image:url(images/bg-header1.gif);
 }
-#header3 {
-    /* background-image:url(images/bg-header4.png); */
-}
-#header4 {
-    /* background-image:url(images/bg-header4.png); */
-}
-
-#header3  a {
-    background:transparent url(images/tab_left.gif) no-repeat scroll left top;
+#header3 li a {
+    background-color: #0015E2;    
+    color:#fff;
 }
 
-#header3 li a span {
-    background:transparent url(images/tab_right.gif) no-repeat scroll right top;
+#header3 li a:hover {
+    background: none repeat scroll 0 0 #0015E2;
+    color: #FFFFFF;
 }
 
-#current a {
-    background:transparent url(images/tab_left-active.gif) no-repeat scroll left top;
+#header3 #current a {
+    background: none repeat scroll 0 0 #3134B0;        
 }
-#current {
-    background:transparent url(images/tab_center-active.gif) no-repeat scroll right top;
-}   
 
-#current #tab_active {
-    background:transparent url(images/tab_right-active.gif) no-repeat scroll right top;
-}
 /*****************************************************
  *  FOOTER STYLES                                    *
  *****************************************************/
diff --git a/main/css/chamilo_green/default.css b/main/css/chamilo_green/default.css
index 19a2555981..b94513896b 100644
--- a/main/css/chamilo_green/default.css
+++ b/main/css/chamilo_green/default.css
@@ -26,31 +26,22 @@ a:active {
 #header1 {
     background-image:url(images/bg-header1.gif);
 }
-#header3 {
-    /* background-image:url(images/bg-header4.png); */
-}
-#header4 {
-    /* background-image:url(images/bg-header4.png); */
-}
 
-#header3  a {
-    background:transparent url(images/tab_left.gif) no-repeat scroll left top;
+#header3 li a {
+    background-color: #A1D80B;    
+    color:#fff;
 }
 
-#header3 li a span {
-    background:transparent url(images/tab_right.gif) no-repeat scroll right top;
+#header3 li a:hover {
+    background: none repeat scroll 0 0 #81B031;
+    color: #FFFFFF;
 }
 
-#current a {
-    background:transparent url(images/tab_left-active.gif) no-repeat scroll left top;
+#header3 #current a {
+    background: none repeat scroll 0 0 #81B031;        
 }
-#current {
-    background:transparent url(images/tab_center-active.gif) no-repeat scroll right top;
-}   
 
-#current #tab_active {
-    background:transparent url(images/tab_right-active.gif) no-repeat scroll right top;
-}
+
 /*****************************************************
  *  FOOTER STYLES                                    *
  *****************************************************/
diff --git a/main/css/chamilo_orange/default.css b/main/css/chamilo_orange/default.css
index 5c4d8b669f..f3a3ca3f64 100644
--- a/main/css/chamilo_orange/default.css
+++ b/main/css/chamilo_orange/default.css
@@ -26,31 +26,21 @@ a:active {
 #header1 {
     background-image:url(images/bg-header1.gif);
 }
-#header3 {
-    /* background-image:url(images/bg-header4.png); */
-}
-#header4 {
-    /*background-image:url(images/bg-header4.png); */
-}
 
-#header3  a {
-    background:transparent url(images/tab_left.gif) no-repeat scroll left top;
+#header3 li a {
+    background-color: #F88017;    
+    color:#fff;
 }
 
-#header3 li a span {
-    background:transparent url(images/tab_right.gif) no-repeat scroll right top;
+#header3 li a:hover {
+    background: none repeat scroll 0 0 #FFAE67;
+    color: #FFFFFF;
 }
 
-#current a {
-    background:transparent url(images/tab_left-active.gif) no-repeat scroll left top;
+#header3 #current a {
+    background: none repeat scroll 0 0 #DF7619;        
 }
-#current {
-    background:transparent url(images/tab_center-active.gif) no-repeat scroll right top;
-}   
 
-#current #tab_active {
-    background:transparent url(images/tab_right-active.gif) no-repeat scroll right top;
-}
 /*****************************************************
  *  FOOTER STYLES                                    *
  *****************************************************/
diff --git a/main/css/chamilo_red/default.css b/main/css/chamilo_red/default.css
index 1a01ddb05d..93299e8f53 100644
--- a/main/css/chamilo_red/default.css
+++ b/main/css/chamilo_red/default.css
@@ -26,31 +26,21 @@ a:active {
 #header1 {
     background-image:url(images/bg-header1.gif);
 }
-#header3 {
-    background-image:url(images/bg-header4.png);
-}
-#header4 {
-    background-image:url(images/bg-header4.png);
+#header3 li a {
+    background-color: #D60B19;    
+    color:#fff;
 }
 
-#header3  a {
-    background:transparent url(images/tab_left.gif) no-repeat scroll left top;
+#header3 li a:hover {
+    background: none repeat scroll 0 0 #D60B19;
+    color: #FFFFFF;
 }
 
-#header3 li a span {
-    background:transparent url(images/tab_right.gif) no-repeat scroll right top;
+#header3 #current a {
+    background: none repeat scroll 0 0 #D2424C;        
 }
 
-#current a {
-    background:transparent url(images/tab_left-active.gif) no-repeat scroll left top;
-}
-#current {
-    background:transparent url(images/tab_center-active.gif) no-repeat scroll right top;
-}   
 
-#current #tab_active {
-    background:transparent url(images/tab_right-active.gif) no-repeat scroll right top;
-}
 /*****************************************************
  *  FOOTER STYLES                                    *
  *****************************************************/