Colourful background #2009
Colorful CC 0Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
More Textures
Noise Pattern With Subtle Cross Lines #179
Grid CC BY-SA 3.0More bright luxury. This is a bit larger than fancy deboss, and with a bit more noise.
Source Viszt Péter
Background pattern 259 (colour 6) #2097
Blue CC 0Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Subtle Dots #921
Light CC BY-SA 3.0As simple and subtle as it gets. But sometimes that’s just what you want.
Source Designova
Floral background #1976
Dark CC 0Remixed from a drawing in 'Analecta Eboracensia', Thomas Widdrington, 1897.
Source Firkin
White Texture@2X #132
Light CC BY-SA 3.0Not the most creative name, but it’s a good all-purpose light background.
Source Dmitry
Background pattern 252 #2162
Dark CC 0Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Chipboard #2581
Wood CC 0A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Dark Wall #817
Dark CC BY-SA 3.0Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
Arches #715
Light CC BY-SA 3.0One more in the line of patterns inspired by Japanese/Asian styles. Smooth.
Source Kim Ruddock
Repeating Vintage Paper Background #1077
Paper CC BY-SA 3.0A repeating background of beige paper with vintage look. Repeats to infinity, as usual.
Source V. Hartikainen
Back Pattern@2X #946
Light CC BY-SA 3.0Pixel by pixel, sharp and clean. Very light pattern with clear lines.
Source M.Ashok
Vintage tile background (colour 3) #2246
Green CC 0A background formed from an image of an old tile on the New York Metropolitan Museum of Art website. To get the base tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Tex2res1@2X #722
Fabric CC BY-SA 3.0Number 3 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
crissXcross #111
Dark CC BY-SA 3.0Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
Prismatic Abstract Geometric Background 2 #268
Noise CC 0Prismatic Abstract Geometric Background 2
Source GDJ
Batthern #324
Grid CC BY-SA 3.0Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
Background pattern 227 (colour 5) #2310
Colorful CC 0A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin