diff --git a/static/css/main.css b/static/css/main.css
index f8b9cef..d10ebcc 100644
--- a/static/css/main.css
+++ b/static/css/main.css
@@ -9,6 +9,13 @@ html {
     color: #888888;
     -webkit-font-smoothing: antialiased;
     -moz-osx-font-smoothing: grayscale;
+
+    -webkit-filter: grayscale(100%);
+    -moz-filter: grayscale(100%);
+    -ms-filter: grayscale(100%);
+    -o-filter: grayscale(100%);
+    filter: grayscale(100%);
+    filter: gray;
 }
 
 body.has-navbar-top{