I got bored the other week and created a WordPress styled theme for the Colloquy IRC client. It uses the standard WordPress colors and includes a nice WordPress logo in the background.
There are two variations of it– WordPress, and WordPress Busy. The only difference is that the latter hides events (join, part, nick, etc), which I find very useful for very busy rooms. Hence the name. 
To install download the zip file containing the styles and image, unzip and drag the variants folder into ~/Library/Application Support/Colloquy/Styles/
From there you should be able to activate the style in Colloquy from Style > Standard > WordPress / WordPress Busy
One very popular feature of WordPress is its rich plugin architecture which allows users and developers to extend its abilities beyond the core installation. WordPress has a database of over 24,000 plugins[11], each of which offer custom functions and features enabling users to tailor their site to their specific needs. These customizations range from SEO (Search Engine Optimization) enhancers to content displaying features, such as the addition of widgets and navigation bars.*
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