diff --git a/client/ngsw-config.json b/client/ngsw-config.json
index 49b210599..1b0fde81f 100644
--- a/client/ngsw-config.json
+++ b/client/ngsw-config.json
@@ -5,7 +5,14 @@
             "name": "app",
             "installMode": "prefetch",
             "resources": {
-                "files": ["/favicon.png", "/index.html", "/*.css", "/*.js"]
+                "files": [
+                    "/favicon.png",
+                    "/index.html",
+                    "/*.css",
+                    "/*.js",
+                    "/fira-sans*",
+                    "/Material-Icons-Baseline.*"
+                ]
             }
         },
         {
@@ -13,7 +20,9 @@
             "installMode": "lazy",
             "updateMode": "prefetch",
             "resources": {
-                "files": ["/assets/**"]
+                "files": [
+                    "/assets/**"
+                ]
             }
         }
     ]
diff --git a/client/src/index.html b/client/src/index.html
index 331a49f45..b3a21a1cf 100644
--- a/client/src/index.html
+++ b/client/src/index.html
@@ -9,7 +9,6 @@
     <meta name="viewport" content="width=device-width, initial-scale=1">
     <link rel="icon" type="image/x-icon" href="assets/img/favicon.png">
     <link rel="manifest" href="/manifest.json" />
-    <meta name="theme-color" content="#317796">
     <meta http-equiv="X-UA-Compatible" content="IE=edge" />
 </head>
 
diff --git a/client/src/manifest.json b/client/src/manifest.json
index 77bf39340..45cfa75bf 100644
--- a/client/src/manifest.json
+++ b/client/src/manifest.json
@@ -1,8 +1,8 @@
 {
     "name": "OpenSlides",
     "short_name": "OpenSlides",
-    "theme_color": "#317796",
-    "background_color": "#317796",
+    "theme_color": "#000000",
+    "background_color": "#ffffff",
     "display": "standalone",
     "scope": "/",
     "start_url": "/",