This plugin is not working for me. I have installed it into my wordpress 2.8.6 blog and pasted in the code from sample funtion.php, modifying just the theme url and the style sheet filename:
get_bloginfo('themes/dark_splash').'/style.css';
and adding/modifying the classes in the array.
However, whenever I go to a post, or save a draft, or try to activate/deactivate a plugin, I get sent to an error page with the following message:
Warning: Cannot modify header information - headers already sent by (output started at [edit:myblog url]/wp-content/themes/dark splash/functions.php:122) in [edit:my blog url]/wp-includes/pluggable.php on line 865