One Page portfolio for Polish graphic designer Piotr Slodyczko that features a background gradient that changes color using CSS only. I like what Piotr is going for with the whitespace and clear Lato type but the responsive is very buggy and the portfolio section arrows need to disappear on bigger screens.
This website has unfortunately been redesigned or gone offline, so I have removed the direct link to it. The screenshot below hopefully preserved enough of the design but if you are really keen to inspect further, try this Archive.org link. FYI: the site was first featured on 09 December 2013.