Paisley #1343
 Light  CC BY-SA 3.0

The name Paisley reminds me of an old British servant. That’s just me.

Source Swetha

 More Textures
Background pattern 223 (colour 6) #2348
 Yellow  CC 0

Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.

Source Firkin

Sativa #1306
 Dark  CC BY-SA 3.0

Honestly, who does not like a little pipe and mustache?

Source Luca Errico

Gold [email protected] #285
 Light  CC BY-SA 3.0

More Japanese-inspired patterns, Gold Scales this time.

Source Josh Green

Wood Chips 2 #2100
 Unknow  CC 0

CC0 textures, backgrounds.

Source SliverKnight

Black Metal Pipes #1089
 Metal  CC BY-SA 3.0

An abstract texture of black metal pipes (seamless).

Source V. Hartikainen

[email protected] #896
 Light  CC BY-SA 3.0

Could remind you a bit of those squares in Super Mario Bros, yeh?

Source Jeff Wall

Subtle Grunge #1040
 Light  CC BY-SA 3.0

A heavy hitter at 400x400px, but lovely still.

Source Breezi

Fabric pattern (colour 3) #2400
 Fabric  CC 0

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

[email protected] #303
 Dark  CC BY-SA 3.0

Dark, square, clean and tidy. What more can you ask for?

Source Jaromír Kavan

Green Dust & [email protected] #108
 Wall  CC BY-SA 3.0

Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.

Source Atle Mo

White Linen #839
 Light  CC BY-SA 3.0

Dead simple but beautiful horizontal line pattern.

Source Fabian Schultz

Blue & Dark Well #1703
 Wall  CC 0

Background Wall, Art Abstract, Blue Well & CC0 texture.

Source Ractapopulous

Floral background 18 #1834
 Dark  CC 0

emixed from a JPG that was uploaded to Pixabay by Kyotime

Source Firkin

Green [email protected] #92
 Dark  CC BY-SA 3.0

The green fibers pattern will work very well in grayscale as well.

Source Matteo Di Capua

Asfault 5 #1384
 Dark  CC 0

Gamedev - Asphalt textures. CC0 License.

Source Davit Masia

[email protected] #830
 Dark  CC BY-SA 3.0

Not the Rebel alliance, but a dark textured pattern.

Source Hendrik Lammers

Decorative divider 298 #1744
 Dark  CC 0

From a drawing in 'Bond Slaves. The story of a struggle.', Isabella Varley, 1893.

Source Firkin

Inflicted #117
 Grid  CC BY-SA 3.0

Dark squares with some virus-looking dots in the grid.

Source Hugo Loning

Wood Texgen 6 #1440
 Wood  CC 0

Gamedev - Wood Textures. CC0 License.

Source Davit Masia

Prismatic Groovy Concentric Background No Black #451
 Noise  CC 0

Prismatic Groovy Concentric Background No Black

Source GDJ

Prismatic Groovy Concentric Background 4 #461
 Noise  CC 0

Prismatic Groovy Concentric Background 4

Source GDJ

Stone Wall & Dark #1521
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

Diamond pattern (colour 2) #2284
 Green  CC 0

From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.

Source Firkin

Gray Floral #755
 Gray  CC BY-SA 3.0

Floral patterns might not be the hottest thing right now, but you never know when you need it!

Source Lauren

Background pattern 309 #1866
 Yellow  CC 0

Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.

Source Firkin

ed62's pattern remixed #1728
 Dark  CC 0

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

meshed silhouette-omnibus #2484
 Brown  CC 0

The image depicts meshed silhouettes of various things.The original image is an OCAL clipart called "Enter FOSSASIA 2016 #IoT T-shirt Design Contest" uploaded by "openclipart".Thanks.

Source Yamachem

Stone Wall & Yellow #1482
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

[email protected] #706
 Light  CC BY-SA 3.0

Detailed but still subtle and quite original. Lovely gray shades.

Source Kim Ruddock