Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
Just like the black maze, only in light gray. Duh.
Source Peax
A seamlessly tile-able grunge background image.
Source V. Hartikainen
Everyone needs some stardust. Sprinkle it on your next project.
Source Atle Mo
Prismatic Triangular Seamless Pattern III With Background
Source GDJ
Prismatic Abstract Background Design No Black
Source GDJ
You know I’m a sucker for these. Well-crafted paper pattern.
Source Mihaela Hinayon
Luxury pattern, looking like it came right out of Paris.
Source Daniel Beaton
This is a grid, only it’s noisy. You know. Reminds you of those printed grids you draw on.
Source Vectorpile
The file was named striped lens, but hey – Translucent Fibres works too.
Source Angelica
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
The name alone is awesome, but so is this sweet dark pattern.
Source Federica Pelzel
Inspired by this, I came up with this pattern. Madness!
Source Atle Mo
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Produced using the clouds, flames and glass blocks plug-ins in Paint.net and the resulting .PNG vectorised with Vector Magic.
Source Firkin
A rusty grunge background for websites. Feel free to use it in your site's theme.
Source V. Hartikainen
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Just the symbols of the signs of the zodiac distributed in a chequer board-like pattern
Source Firkin
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin