Change button colors to dlang.org menu colors

Author: wilzbach

css/style.css

@@ -631,13 +631,13 @@ a.btn:hover
 {
     font-size: 22px;
     padding: 0.4em 1em;
-    background-color: #D8645E;
+    background-color: #B03931;
     color: white;
-    border: #D8645E;
+    border: #B03931;
 }
 .btn.donate-large:hover
 {
-    background-color: #F47069;
+    background-color: #98312A;
     color: white;
 }