To bazil,
The page navigation is a plugin called “WP-PageNavi”.
I have mixed it to this theme.
The method is copy the plugin code into file “function.php”.
It will run auto when you active this theme.
Use CSS.
The green box is a image which act as background.
Code of the day and month like this:
<ul class="date">
<li class="day"><?php the_time('d') ?></li>
<li class="month"><?php the_time('M') ?></li>
</ul>