Dark Wall #817
Dark CC BY-SA 3.0Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
More Textures
Repeating Web Background (Dark Brown) #1079
Metal CC BY-SA 3.0This one has rusty dark brown texture.
Source V. Hartikainen
Green Gobbler #85
Dark CC BY-SA 3.0Luxurious looking pattern (for a T-shirt maybe?) with a hint of green.
Source Simon Meek
Decorative divider 288 #1820
Dark CC 0From a drawing in 'Navigations de Alouys de Cademoste.-La Navigation du Capitaine Pierre Sintre', Alvise da ca da Mosto, 1895.
Source Firkin
Background pattern 308 (colour 3) #1870
Colorful CC 0Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Weave@2X #734
Wall CC BY-SA 3.0Medium gray pattern with small strokes to give a weave effect.
Source Catherine
Background pattern 270 #2061
Dark CC 0A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Weave #733
Wall CC BY-SA 3.0Medium gray pattern with small strokes to give a weave effect.
Source Catherine
Green Background Pattern with Warped Vertical Stripes #968
Stripes CC BY-SA 3.0A green background pattern with warped vertical stripes and a grunge look.
Source V. Hartikainen
Flourish 2 #2299
Dark CC 0From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
Tactile Noise #5
Dark CC BY-SA 3.0A heavy dark gray base, some subtle noise and a 45-degree grid makes this look like a pattern with a tactile feel to it.
Source Atle Mo
Prismatic Abstract Line Art Pattern Background 2 #567
Dark CC 0Prismatic Abstract Line Art Pattern Background 2
Source GDJ
Vintage Speckles@2X #654
Wall CC BY-SA 3.0Lovely pattern with splattered vintage speckles.
Source David Pomfret
Fleurs-de-lys pattern 2 #2205
Dark CC 0Colour version of the original pattern inspired by the front cover of 'Old and New Paris', Henry Edwards, 1894.
Source Firkin
Seamless Cardboard Texture #1212
Cardboard CC BY-SA 3.0A free background image with a seamless texture of cardboard. This texture of cardboard looks quite realistic, especially when is actually tiled.
Source V. Hartikainen
Ribbon pattern 2 (version 2, colour 4) #2036
Colorful CC 0The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Strawberry seamless pattern #208
Noise CC 0This is the remix of "Strawberry Pattern Background" uploaded by "GDJ". Thanks. I realigned strawberries so as to get seamless and changed the BG color.
Source Yamachem
Floral background 17 #1851
Green CC 0Vector version of a JPG that was uploaded to Pixabay by theasad121
Source Firkin
"Wide Stripe Wallpaper", Seamless Pattern #970
Stripes CC BY-SA 3.0A seamless pattern with wide vertical stripes colored in pale yellow.
Source V. Hartikainen
Background pattern 197 (variant 2) #2512
Green CC 0A version without colours blended together to give a different look.
Source Firkin
Dark Embroidery #1340
Dark CC BY-SA 3.0A classic dark tile for a bit of vintage darkness.
Source Listvetra
Floral background 17 (colour 3) #1849
Blue CC 0Remixed from a JPG that was uploaded to Pixabay by theasad121
Source Firkin