Not everyone likes the new lozenge buttons in Tiger Mail. John Siracusa at Ars Technica calls them 
“hideously ugly”. Giles Turnbull at MacDevCenter finds that “Euw…” sums it all up. And Leopard doesn’t remove them.
In fact, the lozenges are spreading. It looks like Preview will feature them in Leopard:
Foad Afshari has posted a disk image containing the “de-lozenged” icons from Tristan O’Tierney’s Cage Fighter , a utility (broken since 10.4.6) that removes the bubble from the buttons. A before and after shot gives you an idea of the transformation:
The disk image also contains the buttons from Panther Mail and instructions on how to manually install them into Mail.app’s package.
However, there is an easier way. Andrew Escobar’s Mail Stamps still works nicely. It does all the hack work for you, replacing the Tiger lozenges with bold and brassy Panther icons:
Mail Stamps includes an uninstaller so you can return to the Tiger look if the mood takes you.
The change will not bust or damage Mail in any way. It only replaces some images deep inside Mail’s application package. You can banish those lozenges with 100% confidence.
Hopefully, someone is already working on “Preview Stamps”.
