changing display of optional params closes #1955

Author: Lauren McCarthy

docs/yuidoc-p5-theme-src/scripts/tpl/item.html

@@ -116,7 +116,7 @@ <h4>Parameters</h4>
     <td>
     <% var p = item.params[i] %>
     <% if (p.optional) { %>
-      <code class="language-javascript">[<%=p.name%>]</code>
+      <code class="language-javascript param-optional"><%=p.name%></code>
     <% } else { %>
       <code class="language-javascript"><%=p.name%></code>
     <% } %> 

docs/yuidoc-p5-theme/assets/reference.css

@@ -21,3 +21,7 @@
 
   font-size: inherit;
 }
+
+#reference .param-optional {
+  color: #AFAFAF;
+}