diff --git a/IPython/html/static/tree/less/tree.less b/IPython/html/static/tree/less/tree.less
index b1bbf8c..7b57c1e 100644
--- a/IPython/html/static/tree/less/tree.less
+++ b/IPython/html/static/tree/less/tree.less
@@ -73,7 +73,7 @@ ul.breadcrumb {
.list_item {
&:hover .list_item {
- background-color: #ddd;
+ background-color: @table-border-color;
};
a {text-decoration: none;}
}
@@ -208,7 +208,7 @@ ul#new-menu {
border-radius: 0px;
.list_item {
- border-bottom: 1px solid #ddd;
+ border-bottom: 1px solid @table-border-color;
&:last-child {
border-bottom: 0px;