Unity greeter updated with visual changes (Ubuntu 12.10)

Unity greeter is the fancy interface that welcomes the user on login, featuring pleasant-to-the-eye elements, such as black-ish transparent login box, black-ish transparent top panel, dotted grid, etc.

Unity greeter 12.10.2 has just landed in Ubuntu, continuing its road to further polish and consistency.

The login box's width has been slightly increased and the username's size decreased, expressing a more compact solid look&feel.

Switching between sessions is performed by pressing the login box's top-right Ubuntu logo, pressing it summons now a two-pieces design, "isolating" the back arrow into a dedicated box.

The mentioned increased-size approach has been implemented for the newly added OK button, too, that is now contained into a long area, contrasting with the selected session (such as Ubuntu) via a darker color.

The session Ubuntu gained a (Default) label, allowing the users to (especially when on numerous sessions installed) easily identify the default should-be-clicked session.