This skin is by and large the same as the default theme, but instead of
images for buttons, it uses styled texual buttons, and also moves the
message controls to the top where they are easier to see and access.  It
also adds some new functionality to the interface:

* An "Archive" button which allows you to move any number of messages to
  a preconfigured archive folder with one click. Configurable in the
  "Special Folders" section of the Preferences.

* A "Move to" button/dropdown, which allows you to move any number of
  messages from the current folder to any other folder, without having
  to drag-n-drop.

* A "Copy to" button/dropdown, which allows you to copy any number of
  messages from the current folder to any other folder.

* A "Not Spam" button which only appears when you are in the configured
  Spam/Junk folder.  This button first copies the message(s) from the
  Spam folder to the INBOX, then moves them to a configurable folder, in
  my case a folder called HamNotSpam.  In my personal setup, this folder
  is processed by DSPAM (http://dspam.nuclearelephant.com/) to allow it to
  train itself by recognizing that it mis-categorized legitimate email as
  spam.  On this same note, I personally have a SpamNotHam folder, but for
  this there is no need for a button since you can just use the "Move to"
  dropdown or drag-n-drop the message(s). If you don't configure a
  Ham-not-spam folder in your preferences then the "Not Spam" button will
  not appear.  Setting it only makes sense if you have a spam filter that
  needs to be trained.

* A "Shred" button which only appears when you are in the configured
  Trash folder.  This button allows you to permanently remove messages.

Not only do I find the textual buttons easier to read, more intuitive
and more visually appealing than images, but eliminating the images
makes the front page around 15KB to 20KB smaller ... not much, but it's
something.