Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Prismatic Groovy Concentric Background 5
Source GDJ
Beautiful dark noise pattern with some dust and grunge.
Source Vincent Klaiber
Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
A light brushed aluminum pattern for your pleasure.
Source Tim Ward
From a drawing in 'Less Black than we're painted', James Payn, 1884.
Source Firkin
Prismatic Hexagonalism Pattern No Background
Source GDJ
Everyone needs some stardust. Sprinkle it on your next project.
Source Atle Mo
The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Same as Silver Scales, but in black. Turn your site into a dragon with this great scale pattern.
Source Alex Parker
Some dark 45 degree angles creating a nice pattern. Huge.
Source Dark Sharp Edges
This is the third pattern called Dark Denim, but hey, we all love them!
Source Brandon Jacoby
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Kaleidoscope Prismatic Abstract No Background
Source GDJ
From a drawing in 'Bond Slaves. The story of a struggle.', Isabella Varley, 1893.
Source Firkin
Prismatic Abstract Background Design
Source GDJ
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Light gray pattern with an almost wall tile-like appearance.
Source Markus Tinner
Could remind you a bit of those squares in Super Mario Bros, yeh?
Source Jeff Wall
Prismatic Curved Diamond Pattern 8 No Background
Source GDJ