Prismatic Groovy Concentric Background 4 No Black@2X #464
Noise CC 0Prismatic Groovy Concentric Background 4 No Black
Source GDJ
More Textures
Decorative divider 194 #2478
Dark CC 0From a drawing in 'Friend or Fortune? The story of a strange year', Robert Overton, 1897.
Source Firkin
P4@2X #1112
Light CC BY-SA 3.0I skipped number 3, because it wasn’t all that great. Sorry.
Source Dima Shiper
Solid #845
Gray CC BY-SA 3.0A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
Floral background 10 #2046
Yellow CC 0Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
Green Fibers@2X #92
Dark CC BY-SA 3.0The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
Background pattern 201 (colour) #2497
Grid CC 0A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Prismatic Isometric Cube Wireframe Pattern No Background@2X #500
Light CC 0Prismatic Isometric Cube Wireframe Pattern No Background
Source GDJ
Decorative divider 248 #2074
Dark CC 0From a drawing in 'Picturesque New Guinea', J Lindt, 1887.
Source Firkin
crissXcross #111
Dark CC BY-SA 3.0Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
Back Pattern #945
Light CC BY-SA 3.0Pixel by pixel, sharp and clean. Very light pattern with clear lines.
Source M.Ashok
Diagonal Waves@2X #1007
Gray CC BY-SA 3.0It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
Geometric pattern #2005
Grid CC 0A monochrome pattern from a tile that can be had by selecting the rectangle in Inkscaope and using shift+alt+i
Source Firkin
Seamless Prismatic Pythagorean Line Art Pattern No Background@2X #570
Light CC 0Seamless Prismatic Pythagorean Line Art Pattern No Background. A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ
polka dot seamless pattern #2531
Light CC 0The image depicts polka dot seamless pattern.
Source Yamachem
Prismatic Groovy Concentric Background@2X #450
Noise CC 0Prismatic Groovy Concentric Background
Source GDJ
Leafy pattern 9 #1802
Green CC 0Remixed from an image that was uploaded to Pixabay by KirstenStar
Source Firkin
Dark Brick Pattern #1032
Stone CC BY-SA 3.0A seamless pattern of dark bricks. Maybe it's not very realistic, but it looks good in my opinion.
Source V. Hartikainen
Background pattern 306 (colour 5) #1879
Colorful CC 0Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
White Well & Star #1700
Wall CC 0Background Wall, Art Abstract, Star Well & CC0 texture.
Source Ractapopulous
Prismatic Geometric Pattern Background No Black #408
Noise CC 0Prismatic Geometric Pattern Background No Black
Source GDJ