Add color-per-page support, render _index, change configs to JSON

layouts/partials/footer.html

@@ -7,7 +7,7 @@
       <div class="copyright">
         <span>© {{ now.Year }} Powered by <a href="http://gohugo.io">Hugo</a></span>
     {{end}}
-        <span>:: Theme made by <a href="https://twitter.com/panr">panr</a></span>
+        <span>:: Theme <i>originally</i> made by <a href="https://twitter.com/panr">panr</a></span>
       </div>
   </div>
 </footer>

layouts/partials/head.html

@@ -9,7 +9,9 @@
 
 <!-- Theme CSS -->
 <link rel="stylesheet" href="{{ "assets/style.css" | absURL }}">
-{{ if (ne $.Site.Params.ThemeColor "orange") }}
+{{ if (isset .Params "color") }}
+  <link rel="stylesheet" href="{{ (printf "assets/%s.css" .Params.color) | absURL }}">
+{{ else if (ne $.Site.Params.ThemeColor "orange") }}
   <link rel="stylesheet" href="{{ (printf "assets/%s.css" $.Site.Params.ThemeColor) | absURL }}">
 {{ end }}