Add a color for the icons on the "New" page

to match the heading color rather than using
standard black.

source/mahara/static/mahara.css_t

@@ -416,6 +416,10 @@ input[type="submit"]:before {
   color: #eeeeee;
 }
 
+.new_icon {
+	color: #423017;
+}
+
 .link-blocktype {
   font-size: 0.9178em;
   margin: 10px 0;