diff --git a/content/treestyletab/treestyletab.css b/content/treestyletab/treestyletab.css
index 4ab0c0c8..ecf5c546 100644
--- a/content/treestyletab/treestyletab.css
+++ b/content/treestyletab/treestyletab.css
@@ -447,7 +447,7 @@ toolbar.treestyletab-tabbar-toolbar-ready:not([nowindowdrag="true"]),
 	                 margin-right 0.2s ease-out,
 	                 margin-top 0.15s ease-out,
 	                 opacity 0.15s ease-out,
-	                 outline-color 0.25s ease-out,
+	                 outline-color 0.5s ease-out,
 	                 min-height 0.15s ease-out,
 	                 max-height 0.15s ease-out,
 	                 min-width 0.15s ease-out /* for Firefox itself */,
@@ -456,7 +456,7 @@ toolbar.treestyletab-tabbar-toolbar-ready:not([nowindowdrag="true"]),
 	            margin-right 0.2s ease-out,
 	            margin-top 0.15s ease-out,
 	            opacity 0.15s ease-out,
-                outline-color 0.25s ease-out,
+                outline-color 0.5s ease-out,
 	            min-height 0.15s ease-out,
 	            max-height 0.15s ease-out,
 	            min-width 0.15s ease-out /* for Firefox itself */,
@@ -468,7 +468,7 @@ toolbar.treestyletab-tabbar-toolbar-ready:not([nowindowdrag="true"]),
 	                 margin-right 0.2s ease-out,
 	                 margin-top 0.15s ease-out,
 	                 opacity 0.15s ease-out,
-	                 outline-color 0.25s ease-out,
+	                 outline-color 0.5s ease-out,
 	                 min-height 0.15s ease-out,
 	                 max-height 0.15s ease-out,
 	                 min-width 0.15s ease-out /* for Firefox itself */,
@@ -478,7 +478,7 @@ toolbar.treestyletab-tabbar-toolbar-ready:not([nowindowdrag="true"]),
 	            margin-right 0.2s ease-out,
 	            margin-top 0.15s ease-out,
 	            opacity 0.15s ease-out,
-	            outline-color 0.25s ease-out,
+	            outline-color 0.5s ease-out,
 	            min-height 0.15s ease-out,
 	            max-height 0.15s ease-out,
 	            min-width 0.15s ease-out /* for Firefox itself */,
@@ -490,7 +490,7 @@ toolbar.treestyletab-tabbar-toolbar-ready:not([nowindowdrag="true"]),
   .tabbrowser-tab:not([treestyletab-collapsed-done="true"]) {
 	-moz-transition: margin-left 0.15s ease-out,
 	                 opacity 0.15s ease-out,
-	                 outline-color 0.25s ease-out,
+	                 outline-color 0.5s ease-out,
 	                 margin-top 0.2s ease-out,
 	                 min-height 0.15s ease-out,
 	                 max-height 0.15s ease-out,
@@ -498,7 +498,7 @@ toolbar.treestyletab-tabbar-toolbar-ready:not([nowindowdrag="true"]),
 	                 max-width 0.15s ease-out /* for Firefox itself */;
 	transition: margin-left 0.15s ease-out,
 	            opacity 0.15s ease-out,
-                outline-color 0.25s ease-out,
+                outline-color 0.5s ease-out,
 	            margin-top 0.2s ease-out,
 	            min-height 0.15s ease-out,
 	            max-height 0.15s ease-out,
@@ -509,7 +509,7 @@ toolbar.treestyletab-tabbar-toolbar-ready:not([nowindowdrag="true"]),
   .tabbrowser-tab:not([treestyletab-collapsed-done="true"]) {
 	-moz-transition: margin-left 0.15s ease-out,
 	                 opacity 0.15s ease-out,
-	                 outline-color 0.25s ease-out,
+	                 outline-color 0.5s ease-out,
 	                 margin-top 0.2s ease-out,
 	                 min-height 0.15s ease-out,
 	                 max-height 0.15s ease-out,
@@ -518,7 +518,7 @@ toolbar.treestyletab-tabbar-toolbar-ready:not([nowindowdrag="true"]),
 	                 transform 0.2s ease-out /* for Firefox itself */;
 	transition: margin-left 0.15s ease-out,
 	            opacity 0.15s ease-out,
-                outline-color 0.25s ease-out,
+                outline-color 0.5s ease-out,
 	            margin-top 0.2s ease-out,
 	            min-height 0.15s ease-out,
 	            max-height 0.15s ease-out,
@@ -531,7 +531,7 @@ toolbar.treestyletab-tabbar-toolbar-ready:not([nowindowdrag="true"]),
   .tabbrowser-tab:not([treestyletab-collapsed-done="true"]) {
 	-moz-transition: margin-left 0.15s ease-out,
 	                 opacity 0.15s ease-out,
-	                 outline-color 0.25s ease-out,
+	                 outline-color 0.5s ease-out,
 	                 margin-bottom 0.2s ease-out,
 	                 min-height 0.15s ease-out,
 	                 max-height 0.15s ease-out,
@@ -539,7 +539,7 @@ toolbar.treestyletab-tabbar-toolbar-ready:not([nowindowdrag="true"]),
 	                 max-width 0.15s ease-out /* for Firefox itself */;
 	transition: margin-left 0.15s ease-out,
 	            opacity 0.15s ease-out,
-                outline-color 0.25s ease-out,
+                outline-color 0.5s ease-out,
 	            margin-bottom 0.2s ease-out,
 	            min-height 0.15s ease-out,
 	            max-height 0.15s ease-out,
@@ -550,7 +550,7 @@ toolbar.treestyletab-tabbar-toolbar-ready:not([nowindowdrag="true"]),
   .tabbrowser-tab:not([treestyletab-collapsed-done="true"]) {
 	-moz-transition: margin-left 0.15s ease-out,
 	                 opacity 0.15s ease-out,
-	                 outline-color 0.25s ease-out,
+	                 outline-color 0.5s ease-out,
 	                 margin-bottom 0.2s ease-out,
 	                 min-height 0.15s ease-out,
 	                 max-height 0.15s ease-out,
@@ -559,7 +559,7 @@ toolbar.treestyletab-tabbar-toolbar-ready:not([nowindowdrag="true"]),
 	                 transform 0.2s ease-out /* for Firefox itself */;
 	transition: margin-left 0.15s ease-out,
 	            opacity 0.15s ease-out,
-                outline-color 0.25s ease-out,
+                outline-color 0.5s ease-out,
 	            margin-bottom 0.2s ease-out,
 	            min-height 0.15s ease-out,
 	            max-height 0.15s ease-out,
diff --git a/modules/browser.js b/modules/browser.js
index ad005a56..04885f67 100644
--- a/modules/browser.js
+++ b/modules/browser.js
@@ -7135,7 +7135,7 @@ TreeStyleTabBrowser.prototype = inherit(TreeStyleTabWindow.prototype, {
 	highlightTab : function TSTBrowser_highlightTab(aTab)
 	{
 		aTab.setAttribute(this.kHIGHLIGHTED, 'true');
-		wait(250)
+		wait(500)
 			.then((function() {
 				aTab.removeAttribute(this.kHIGHLIGHTED);
 			}).bind(this));