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
A repeating background of beige (or is it more vanilla yellow) textured stripes. One more background with stripes.
Source V. Hartikainen
A subtle shadowed checkered pattern. Increase the lightness for even more subtle sexiness.
Source Josh Green
Prismatic Hexagonalism Pattern No Background
Source GDJ
From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
Psychedelic Geometric Background No Black
Source GDJ
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
Prismatic Groovy Concentric Background 4
Source GDJ
Prismatic Polka Dots 3 No Background
Source GDJ
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I.
Source Firkin
A free background tile with a pattern of pink bump dots. This background tile is sweet! Moreover, it's designed for use as website backgrounds.
Source V. Hartikainen
Light honeycomb pattern made up of the classic hexagon shape.
Source Federica Pelzel
From a drawing in 'Picturesque New Guinea', J Lindt, 1887.
Source Firkin
Looks like an old rug or a computer chip.
Source Patutin Sergey
Background Wall, Art Abstract, Blue Well & CC0 texture.
Source Ractapopulous
A light brushed aluminum pattern for your pleasure.
Source Tim Ward
I love the movie Pineapple Express, and I’m also liking this Pineapple right here.
Source Audee Mirza
Remixed from a drawing in 'The Canadian horticulturist', 1892
Source Firkin
Remixed from a drawing in 'A Child of the Age', Francis Adams, 1894.
Source Firkin