Not the Rebel alliance, but a dark textured pattern.
Source Hendrik Lammers
A version without colours blended together to give a different look.
Source Firkin
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
The tile can be had by selecting the rectangle in Inkscape and using shift+alt+i. Remixed from a drawing in 'Flowers of Song', Frederick Weatherly, 1895.
Source Firkin
Hey, you never know when you’ll need a bird pattern, right?
Source Pete Fecteau
This one is amazing, truly original. Go use it!
Source Viahorizon
A browner version of the original weathered fence texture.
Source Firkin
Simple wide squares with a small indent. Fits all.
Source Petr Šulc.
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Nice little grid. Would work great as a base on top of some other patterns.
Source Arno Gregorian
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Prismatic Geometric Pattern Variation 2 With Background
Source GDJ
A lovely light gray pattern with stripes and a dash of noise.
Source V. Hartikainen
Remixed from a drawing in 'The Canadian horticulturist', 1892
Source Firkin
Here's a brown background pattern with subtle stripes. I hope you'll like the color. If not, feel free to change it using an image editor, if you know how of course. Personally, I'm using GIMP to create these backgrounds.
Source V. Hartikainen
Alternative colour scheme. Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
This background has abstract texture with some similarities to wood.
Source V. Hartikainen
This texture looks like old leather. It should look great as a background on web pages.
Source V. Hartikainen
Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
You know, tiny and sharp. I’m sure you’ll find a use for it.
Source Atle Mo
Abstract Tiled Background Extended 10
Source GDJ
Background Wall, Art Abstract, Watercolor Vintage style CC0 texture.
Source Ractapopulous
Utilising a bird from s-light and some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin