It's pouring down rain right now and I've decided that instead of spending $30 to $199 on an amazing SquirrelMail theme from some professional SquirrelMail theme designers, I'd hack up the basic CSS sheet and create my own 'Windows XP' look directly from the stylesheet.
(Instructions based on cPanel-powered server, other control panels may vary by path)
# cd /usr/local/cpanel/base/3rdparty/squirrelmail/themes
# wget http://www.metafound.com/xp_theme.txt
# mv xp_theme.txt xp_theme.php
Now you need to include this new entry in your config so that it becomes an option in your theme selection menu.
# cd ../config (/usr/local/cpanel/base/3rdparty/squirrelmail/config)
# pico -w config.php
Look for the following lines:
$theme['PATH'] = SM_PATH . 'themes/penguin.php';
$theme['NAME'] = 'Penguin';
Below this, add the following new entry and save the file:
$theme['PATH'] = SM_PATH . 'themes/xp_theme.php';
$theme['NAME'] = 'Windows XP';
Now log in to SquirrelMail and select the new theme. I've included a screenshot as not to disappoint someone looking for the eye candy $199 XP themes you see for sale.
Feedback is welcome. Enjoy.