The original enhanced with one of Inkscapes's filters.
Source Firkin
Prismatic Curved Diamond Pattern 5 No Background
Source GDJ
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
Simple wide squares with a small indent. Fits all.
Source Petr Šulc.
Imagine you zoomed in 1000X on some fabric. But then it turned out to be a skeleton!
Source Angelica
Light gray grunge wall with a nice texture overlay.
Source Adam Anlauf
That’s what it is, a dark dot. Or sort of carbon looking.
Source Tsvetelin Nikolov
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
White circles connecting on a light gray background.
Source Mark Collins
Prismatic Snowflakes Pattern 3 No Background
Source GDJ
Inspired by a design found in 'Konstantinápolyi emlékeim', Miklos Chriszto, 1893.
Source Firkin
The image is a remix of "edo pattern-samekomon".I changed the color of dots from black to white and added BG in light-brown.
Source Yamachem
No idea what Nistri means, but it’s a crisp little pattern nonetheless.
Source Markus Reiter
Fabric-ish patterns are close to my heart. French Stucco to the rescue.
Source Christopher Buecheler
Feel free to download and use it, or see the rest of the dark background patterns that I have made. Anyway, I hope you will find something that you like.
Source V. Hartikainen
Produced using the clouds, flames and glass blocks plug-ins in Paint.net and the resulting .PNG vectorised with Vector Magic.
Source Firkin
A seamless canvas texture for using as background on websites. Colored in pale tones of brown.
Source V. Hartikainen
A seamless pattern drawn originally in Paint.net by distorting a slice of background pattern 116 and copying the resulting triangle numerous times.
Source Firkin
A light gray fabric pattern with faded vertical stripes.
Source V. Hartikainen
I guess this is inspired by the city of Ravenna in Italy and its stone walls.
Source Sentel