This plugin will show ’shortcut icon’ (usually from ‘favicon.ico’ file) from your current theme as shortcut icon for admin panel of your blog.
Usually you just need to drop your favicon.ico file in root of your html and it will shown without any plugins. But in my case I used one install of WordPress for couple of sites, so solution was to put icon to theme folder and specify it in theme ‘header.php’:
<link rel="SHORTCUT ICON" href="<?php bloginfo('template_url'); ?>/favicon.ico"></link>
But such solution works only for result pages, not the WordPress Admin Panel, so here is special (small) plugin. Download file, rename it to *.php, put to your plugins folder and activate in ‘Plugns’ menu.