diff --git a/backend/00-router.go b/backend/00-router.go
index 71fe036..e029bbd 100644
--- a/backend/00-router.go
+++ b/backend/00-router.go
@@ -43,9 +43,9 @@ func renderShell(w http.ResponseWriter, active, readingPane string) {
 	fmt.Fprintf(w, `<!doctype html><html lang="de"><head><meta charset="utf-8">
 <meta name="viewport" content="width=device-width,initial-scale=1">
 <title>Mail-Graveyard</title>
-<link rel="stylesheet" href="/static/style.css?v=20260706-4">
+<link rel="stylesheet" href="/static/style.css?v=20260706-5">
 <script src="/static/htmx.min.js"></script>
-<script src="/static/app.js?v=20260706-4" defer></script></head>
+<script src="/static/app.js?v=20260706-5" defer></script></head>
 <body class="ol2013">
 <header class="ribbon">
   <nav class="ribbon-tabs">
diff --git a/frontend-js/dist/style.css b/frontend-js/dist/style.css
index 09ea2ac..4411bc7 100644
--- a/frontend-js/dist/style.css
+++ b/frontend-js/dist/style.css
@@ -2,8 +2,8 @@
    Farben nach dem 2013er Flat-Design: Kopfband Outlook-Blau, helle Panes,
    dezente Rahmen, blaue Auswahlzeile. */
 :root {
-  --ol-blue:      #0072c6;  /* Outlook-2013 Kopfband */
-  --ol-blue-dark: #005a9e;
+  --ol-blue:      #005a9e;  /* Outlook-2013 Kopfband, etwas dunkler */
+  --ol-blue-dark: #004578;
   --ol-bg:        #f3f3f3;  /* Fensterhintergrund */
   --ol-pane:      #ffffff;
   --ol-tree:      #f0f0f0;  /* linke Spalte etwas grau */
