diff --git a/_includes/header.html b/_includes/header.html
index 84c47c5..94406ca 100644
--- a/_includes/header.html
+++ b/_includes/header.html
@@ -2,8 +2,13 @@
 <meta name="viewport" content="width=device-width">
 <link id="favicon" rel="shortcut icon" type="image/png" href="data:image/png;base64,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">
 <style>
+a{
+  color: #268bd2;
+}
 body {
+  color: #073642;
   display: block;
+  background: #eee8d5;
   padding: 0px 20px;
   max-width: 550px;
   margin: 0 auto;
@@ -65,9 +70,9 @@ body {
 
 .button:link,
 .button:visited {
-    background-color: white;
-    color: black;
-    border: 2px solid black;
+    background-color: #660033;
+    color: white;
+    border: 1px solid #660033;
     padding: 4px 8px;
     text-align: center;
     text-decoration: none;
@@ -76,7 +81,7 @@ body {
 
 .button:hover,
 .button:active {
-    background-color: black;
+    background-color: #660033;
     color: white;
 }
 
diff --git a/sitemap.xml b/sitemap.xml
index 5b599ed..44675d9 100644
--- a/sitemap.xml
+++ b/sitemap.xml
@@ -8,7 +8,7 @@
   {% for page in pages %}
     <url>
       <loc>{{ page.url | replace:'/index.html','/' | absolute_url | xml_escape }}</loc>
-      {% if page.date}<lastmod>{{ page.date | date_to_xmlschema }}</lastmod>{%endif%}
+      {% if page.date %}<lastmod>{{ page.date | date_to_xmlschema }}</lastmod>{%endif%}
     </url>
   {% endfor %}
 </urlset>