Light gray pattern with an almost wall tile-like appearance.
Source Markus Tinner
A version without colours blended together to give a different look.
Source Firkin
A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
This is lovely, just the right amount of subtle noise, lines and textures.
Source Richard Tabor
A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Colour version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
Psychedelic Geometric Background No Black
Source GDJ
A dark one with geometric shapes and dotted lines.
Source Mohawk Studios
Remixed from a drawing in 'A Child of the Age', Francis Adams, 1894.
Source Firkin