Such as www.braintreepayments.com. I see this type of design so frequently nowadays. It's so common that it looks like a template, yet all kinds of companies that you wouldn't think would be using web design templates are using it. Is it becoming some sort of a standard?
It clearly indicates the law of closure or the way a site gets binded up well with a darker patch at the bottom. This is really against a contrasting color that the black works. The footer is a great area also to unearth some of the information/link that we do not find somewhere else. So keeping a distinct color such as black, always a design decision but sometimes this has become a pattern where designers and managers automatically put that band, since its a wise decision and not a show-stopper.
I think there is a connection with other questions on mega-footers, which have become popular of last, and there are differences in the way they need to be presented. Mini-footers were largely there to contain the stuff that no-one normally read, so were often done in relatively low contrast - they were there, but there was no need to draw any attention to a few pieces of writing at the bottom of the page.
The Mega-footer approach, however, requires the details held here to be clearly visible. As the normal styling is to have the page background light, and the writing dark, it makes a lot of sense to provide a contrast to this and make the mega-footer background dark, and the writing light.
So I think it is less of a "template" as such, and more of a style that has been shown to work, and so one that most designers will follow.