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
A seamless pattern created from a square tile. To get the tile, select the pattern in Inkscape and use shift+alt+i.
Source Firkin
The original has been presented as black on transparent and stored in the pattern definitions. To retrieve the unit tile select the rectangle in Inkscape and use shift+alt+i
Source Firkin
Prismatic Curved Diamond Pattern 8 No Background
Source GDJ
From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
Abstract Tiled Background Extended 11
Source GDJ
Simple wide squares with a small indent. Fits all.
Source Petr Šulc.
The name is totally random, but hey, it sounds good.
Source Atle Mo
A version without colours blended together to give a different look.
Source Firkin
Background Wall, Art Abstract, Blue Well & CC0 texture.
Source Ractapopulous
Formed by distorting a JPG from PublicDomainPictures
Source Firkin
The name tells you it has curves. Oh yes, it does!
Source Peter Chon
You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo