Dark Wall@2X #818
Dark CC BY-SA 3.0Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
More Textures
Tessellation 15 #2223
Dark CC 0The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
flower seamless pattern-remix #2445
Fabric CC 0This is a remix of "flower seamless pattern".I rotated the original image by 90 degrees.This is a seamless pattern of flowers.These horizontal wavy lines are one of Edo patterns which is called "tatewaku or tachiwaku or 立湧" that represents uprising steam or vapor.
Source Yamachem
Zig-zag pattern 2 #2417
Grid CC 0A seamless pattern based on a rectangular tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Leafy decorative divider #1760
Dark CC 0From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Background pattern 246 (colour 3) #2184
Green CC 0This was formed by distorting an image of a background on Pixabay.
Source Firkin
Black Mamba #57
Dark CC BY-SA 3.0The name alone is awesome, but so is this sweet dark pattern.
Source Federica Pelzel
Diamond pattern (colour 5) #2281
Red CC 0From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Beige Stripes #938
Stripes CC BY-SA 3.0A repeating background of beige (or is it more vanilla yellow) textured stripes. One more background with stripes.
Source V. Hartikainen
Background pattern 9 (B&W) #212
Dark CC 0Black & white version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
Page ornament 54 #2059
Dark CC 0Remixed from a drawing in 'The Canadian horticulturist', 1892
Source Firkin
Floral design 94 #1792
Yellow CC 0From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Retro Circles Background 8 No Black@2X #438
Dark CC 0Retro Circles Background 8 No Black
Source GDJ
Wall #1241
Stone CC 0Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Background pattern 208 #2465
Grid CC 0A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Tile-able Wall Texture (Light Orange Brown) #1051
Stone CC BY-SA 3.0A seamless texture of an abstract wall colored in shades of light orange brown.
Source V. Hartikainen
Subtle Website Background #1022
Stone CC BY-SA 3.0Here's a subtle marble-like background for use on websites.
Source V. Hartikainen
White tiles@2X #728
Grid CC BY-SA 3.0A nice and simple white rotated tile pattern.
Source Another One