[Please let a comment if you like it or if you have any feature idea; I do it for fun and I couldn't develop some features if these aren't useful for me (e.g. GTalk).]

GMailbox
Turning Gmail into Mailbox (in progress)
This version of the style was made for being used with any background image.

To use the Mac style (all white) use this style:
http://freestyler.ws/style/109238/gmailbox-gmail-mailbox-mac

To use with dark left column, iPad style, use this:
http://freestyler.ws/style/109389/gmailbox-gmail-mailbox-ipad

New: 3.2 Compose window color changes. Transparent message container background.
Ver. 3.0 Changed Action icons. Fixed background. Other fixes.
Ver. 2.2 Added left column 'folders' icons. Suitable for any background (better white or black).
Ver. 2.0 Re-maked from zero.
Ver. 1.0 First version, made from Outlook style.

# Outlook, Calendar, Tasks, iCloud, Mailbox, Dropbox, Microsoft, Apple, Yahoo, Email, Mail, Contacts ...