change colorscheme to purple

static/css/gh-fork-ribbon.css

   padding: 2px 0;
 
   /* Set the base colour */
-  background-color: green; /* #FF9900; */
+  background-color: purple; /* green; */ /* orange; */ /* #FF9900; */
 
   /* Set a gradient: transparent black at the top to almost-transparent black at the bottom */
   background-image: -webkit-gradient(linear, left top, left bottom, from(rgba(0, 0, 0, 0.00)), to(rgba(0, 0, 0, 0.15)));

static/css/style.css

     padding: 0px;
 }
 
+hr {
+    color: purple; /* green; */ /* orange; */
+}
+
 #nav {
     border-bottom-style: solid;
     border-bottom-width: 2px;
-    border-bottom-color: green; /* orange; */
+    border-bottom-color: purple; /* green; */ /* orange; */
     background-color: white;
     width: 100%;
 }
     margin: 1em;
     border-style: solid;
     border-width: 2px;
-    border-color: green; /* orange; */
+    border-color: purple; /* green; */ /* orange; */
     border-radius: 10px;
 }