Thanks to the generosity and creativity of many FastMail.FM users, there are now many more stylesheets to choose from! Click "Options" and then "Account Preferences", and then pick a stylesheet. The new ones are after "USA" in the list. With the new FastMail.FM country domains (like 'fastmail.us') and the new "flag series" of stylesheets, you can really show your patriotism!
To preview all stylesheets, have a look at the FastMail.FM stylesheet gallery. Many thanks to hard-working FastMailer Lisa for developing and hosting this gallery.
Thanks also to Kurian for his thoroughness in testing all the contributed stylesheets so carefully, and a special mention to stylesheet-artist Dave, who has had an amazing 23 stylesheets chosen as official FastMail.FM selections!