diff --git a/templates/styles.tmpl b/templates/styles.tmpl
index 857e40e..72d89af 100644
--- a/templates/styles.tmpl
+++ b/templates/styles.tmpl
@@ -30,7 +30,7 @@ main {
 
 .tn-tunnel-list-item {
   padding: 10px;
-  border: 1px solid #000;
+  border: 1px solid var(--main-color);
 }
 
 .tn-attribute {
@@ -41,7 +41,7 @@ main {
 }
 
 .tn-tunnel-table, .tn-tunnel-table__cell {
-  border: 1px solid black;
+  border: 1px solid var(--main-color);
   border-collapse: collapse;
   text-align: center;
   padding: 10px;