Link to the theme (http://custom.simplemachines.org/themes/index.php?lemma=2288)
Cubic is strongly grid based dark theme for your SMF forum.
Demo:Live demo (http://demos.burning-brushes.pl/?theme=7)Support:
International (http://burning-brushes.pl/international-style-support/)
Polish/Polski (http://burning-brushes.pl/polskie-wsparcie-styli/)