Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
A seamless dark leather-like background texture with diagonal lines that look like stitches.
Source V. Hartikainen
In the spirit of WWDC 2011, here is a dark iOS inspired linen pattern.
Source Atle Mo
Luxury pattern, looking like it came right out of Paris.
Source Daniel Beaton
Black And White Floral Pattern Background from PDP.
Source GDJ
From a drawing in 'Real Sailor-Songs', John Ashton, 1891.
Source Firkin
Actually remixed from a pattern on Pixabay. But then noticed a very similar one on Openclipart.org uploaded by btj51q2.
Source Firkin
Black paper texture, based on two different images.
Source Atle Mo
Based from Design Kindle
Remixed from a JPG that was uploaded to Pixabay by Osckar
Source Firkin
Same classic 45-degree pattern, dark version.
Source Luke McDonald
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Thin lines, noise and texture creates this crisp dark denim pattern.
Source Marco Slooten
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Green Web Background, Seamless tile.
Source V. Hartikainen
Prismatic Curved Diamond Pattern 6 No Background
Source GDJ