Number five from the same submitter, makes my job easy.
Source Dima Shiper
Prismatic Floral Pattern 3 Variation 3 No Background
Source GDJ
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
To get the repeating unit, select the rectangle in Inkscape and use shift+alt+i
Source Firkin
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
This is lovely, just the right amount of subtle noise, lines and textures.
Source Richard Tabor
A seamless texture of a rough concrete surface.
Source V. Hartikainen
Black And White Floral Pattern Background Inverse
Source GDJ
The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
This is the third pattern called Dark Denim, but hey, we all love them!
Source Brandon Jacoby
A seamless pattern made from the gold Penrose triangle by GDJ and the two remixes
Source Firkin
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A simple example on using clones. You can generate a nice base for a pattern fill quickly with it.
Source Lazur URH
Sounds like something from World of Warcraft. Has to be good.
Source Tony Kinard
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
You know, tiny and sharp. I’m sure you’ll find a use for it.
Source Atle Mo
Thin lines, noise and texture creates this crisp dark denim pattern.
Source Marco Slooten
Prismatic Geometric Tessellation Pattern 2 No Background
Source GDJ
This could be a hippy vintage wallpaper.
Source Tileable Patterns