diff --git a/userChrome.css b/userChrome.css
index 77da168..e89e382 100644
--- a/userChrome.css
+++ b/userChrome.css
@@ -648,6 +648,13 @@ url(chrome://browser/content/places/bookmarkProperties.xul)  {
     background: var(--blue-40) !important;
   }
 
+  treechildren:not(.autocomplete-treebody)::-moz-tree-row(selected) {
+    -moz-border-top-colors: var(--grey-80) !important;
+    -moz-border-right-colors: var(--grey-80) !important;
+    -moz-border-left-colors: var(--grey-80) !important;
+    -moz-border-bottom-colors: var(--grey-80) !important;
+  }
+
   #placeContent treechildren:not(.autocomplete-treebody)::-moz-tree-row(odd) {
     background: rgba(12, 12, 13, .1) !important;
   }
@@ -752,4 +759,4 @@ browser[type="content"] > html {
 
 .tab-line[selected="true"] {
   background-color: var(--primary-accent-color) !important;
-}
\ No newline at end of file
+}