This theme is called Arobase. It is a cool looking and Professional theme for SMF. Its also easy going on eyes. I have added onmouseover effects for Forms (Buttons, Text Area etc..). and in this theme however wide the screen resolution maybe, the logo would fit well. The right part of the logo is made to repeat to fit the screen.
UPDATE I have updated the package by fixing a small error on the index.template
July,27 Added German buttons. Thanks to 321sofr for the conversion. Just download and extract german.zip to Themes/Arobase/images/german/
Regarding the comment below: I don't know about 1.0.7 If anyone could convert it, I'm glad.