diff --git a/css/setup.css b/css/setup.css
index a4df0632a..0e81f5936 100644
--- a/css/setup.css
+++ b/css/setup.css
@@ -15,11 +15,20 @@
  *
  * You should have received a copy of the GNU Affero General Public License
  */
-
 /* Helpers classes */
 .center {
   text-align: center;
 }
+/* Animations */
+@keyframes progress_bar_color_ongoing {
+  from {
+    background-color: #fbd38d;
+  }
+  to {
+    background-color: #f4c56e;
+  }
+}
+/* Theme */
 body {
   background-color: #eee;
   color: #1a202c;
@@ -147,10 +156,16 @@ table.formTable {
   background-color: #edf2f7 !important;
 }
 #progress .progress {
-  transition: background-color 0.2s ease-in-out;
+  color: #000 !important;
+  /* !important to overload jQuery UI style */
+  background-color: #fbd38d !important;
+  /* !important to overload jQuery UI style */
+  animation: progress_bar_color_ongoing 0.8s infinite alternate;
 }
 #progress .progress.progress-error {
   background-color: #e53e3e !important;
+  /* !important to overload jQuery UI style */
+  animation: none;
 }
 h3.clickable {
   background: url(../images/plus.gif) no-repeat left;
diff --git a/css/setup.scss b/css/setup.scss
index 486b4a2d8..beb1cbb0e 100644
--- a/css/setup.scss
+++ b/css/setup.scss
@@ -28,25 +28,38 @@ $link-hover-color: #EA7D1E !default;
 // Messages to the user
 $message-default-border-color: #4A5568 !default;
 $message-default-text-color: #1A202C !default;
-$message-default-background-color: #F7FAFC !default;
+$message-default-bg-color: #F7FAFC !default;
 
 $message-valid-border-color: #48BB78 !default;
 $message-valid-text-color: #276749 !default;
-$message-valid-background-color: #F0FFF4 !default;
+$message-valid-bg-color: #F0FFF4 !default;
 
 $message-warning-border-color: #ED8936 !default;
 $message-warning-text-color: #C05621 !default;
-$message-warning-background-color: #FFFAF0 !default;
+$message-warning-bg-color: #FFFAF0 !default;
 
 $message-error-border-color: #E53E3E !default;
 $message-error-text-color: #C53030 !default;
-$message-error-background-color: #FFF5F5 !default;
+$message-error-bg-color: #FFF5F5 !default;
+
+// Compilation progress bar
+$progress-bar-color: #000000 !default;
+$progress-bar-ongoing-1-bg-color: #FBD38D !default;
+$progress-bar-ongoing-2-bg-color: #F4C56E !default;
+$progress-bar-error-bg-color: #E53E3E !default;
 
 /* Helpers classes */
 .center {
 	text-align: center;
 }
 
+/* Animations */
+@keyframes progress_bar_color_ongoing {
+	from { background-color: $progress-bar-ongoing-1-bg-color; }
+	to { background-color: $progress-bar-ongoing-2-bg-color; }
+}
+
+/* Theme */
 body {
     background-color: #eee;
     color: $default-font-color;
@@ -179,9 +192,13 @@ table.formTable {
     background-color: #EDF2F7 !important;
     
     .progress{
-        transition: background-color 0.2s ease-in-out;
+		color: $progress-bar-color !important; /* !important to overload jQuery UI style */
+		background-color: $progress-bar-ongoing-1-bg-color !important; /* !important to overload jQuery UI style */
+		animation: progress_bar_color_ongoing 0.8s infinite alternate;
+
         &.progress-error{
-            background-color: #E53E3E !important;
+            background-color: $progress-bar-error-bg-color !important; /* !important to overload jQuery UI style */
+			animation: none;
         }
     }
 }
@@ -197,23 +214,23 @@ h3.clickable.open {
 }
 .message{
     color: $message-default-text-color;
-    background-color: $message-default-background-color;
+    background-color: $message-default-bg-color;
     border-left: 4px solid $message-default-border-color;
     padding: 10px;
 
     &.message-valid{
         color: $message-valid-text-color;
-        background-color: $message-valid-background-color;
+        background-color: $message-valid-bg-color;
         border-color: $message-valid-border-color;
     }
     &.message-warning{
         color: $message-warning-text-color;
-        background-color: $message-warning-background-color;
+        background-color: $message-warning-bg-color;
         border-color: $message-warning-border-color;
     }
     &.message-error{
         color: $message-error-text-color;
-        background-color: $message-error-background-color;
+        background-color: $message-error-bg-color;
         border-color: $message-error-border-color;
     }
     >.message-title {
diff --git a/setup/wizardsteps.class.inc.php b/setup/wizardsteps.class.inc.php
index 5ca1d3711..c960f8a04 100644
--- a/setup/wizardsteps.class.inc.php
+++ b/setup/wizardsteps.class.inc.php
@@ -1,44 +1,20 @@
 <?php
-// Copyright (C) 2010-2017 Combodo SARL
-//
-//   This file is part of iTop.
-//
-//   iTop is free software; you can redistribute it and/or modify
-//   it under the terms of the GNU Affero General Public License as published by
-//   the Free Software Foundation, either version 3 of the License, or
-//   (at your option) any later version.
-//
-//   iTop is distributed in the hope that it will be useful,
-//   but WITHOUT ANY WARRANTY; without even the implied warranty of
-//   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-//   GNU Affero General Public License for more details.
-//
-//   You should have received a copy of the GNU Affero General Public License
-//   along with iTop. If not, see <http://www.gnu.org/licenses/>
-
 /**
- * All the steps of the iTop installation wizard
+ * Copyright (C) 2013-2019 Combodo SARL
  *
- * @copyright   Copyright (C) 2010-2017 Combodo SARL
- * @license     http://opensource.org/licenses/AGPL-3.0
+ * This file is part of iTop.
  *
- * Steps order (can be retrieved using \WizardController::DumpStructure) :
+ * iTop is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * WizStepWelcome
- * WizStepInstallOrUpgrade
- *    +             +
- *    |             |
- *    v             +----->
- * WizStepLicense          WizStepDetectedInfo
- * WizStepDBParams           +              +
- * WizStepAdminAccount       |              |
- * WizStepMiscParams         v              +------>
- *    +                    WizStepLicense2 +--> WizStepUpgradeMiscParams
- *    |                                            +
- *    +--->    <-----------------------------------+
- * WizStepModulesChoice
- * WizStepSummary
- * WizStepDone
+ * iTop is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
  */
 
 require_once(APPROOT.'setup/setuputils.class.inc.php');
@@ -2441,7 +2417,7 @@ JS
 	$("#wiz_form").data("installation_status", "running");
 	WizardUpdateButtons();
 	$('#setup_msg').html('$sMessage');
-	$('#progress').progression( {Current:{$aRes['percentage-completed']}, Maximum: 100, aBackground: '#FBD38D', aTextColor: '#000000'} );
+	$('#progress').progression( {Current:{$aRes['percentage-completed']}, Maximum: 100} );
 	
 	//$("#percentage").html('{$aRes['percentage-completed']} % completed<br/>{$aRes['next-step-label']}');
 	ExecuteStep('{$aRes['next-step']}');
@@ -2454,7 +2430,7 @@ EOF
 			$oPage->add_ready_script(
 <<<EOF
 	$("#wiz_form").data("installation_status", "completed");
-	$('#progress').progression( {Current:100, Maximum: 100, aBackground: '#FBD38D', aTextColor: '#000000'} );
+	$('#progress').progression( {Current:100, Maximum: 100} );
 	WizardUpdateButtons();
 	$("#btn_next").unbind("click.install");
 	$("#btn_next").click();