This is a remix of "blue wave-seigaiha".I hope this subtle color version of Seigaiha would be suitable for background .
Source Yamachem
Prismatic 3D Isometric Tessellation Pattern 6
Source GDJ
Psychedelic Geometric Background No Black
Source GDJ
Brushed aluminum, in a bright gray version. Lovely 2X as well.
Source Andre Schouten
This yellow background consists of a pattern of glossy gold buttons arranged in polka dot style on a seamless texture. Here's a pale yellow background pattern. Feel free to use it for your needs!
Source V. Hartikainen
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
From a drawing in 'Navigations de Alouys de Cademoste.-La Navigation du Capitaine Pierre Sintre', Alvise da ca da Mosto, 1895.
Source Firkin
8 by 8 pixels, and just what the title says.
Source pixilated
A seamlessly tile-able grunge background image.
Source V. Hartikainen
I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
Prismatic Abstract Line Art Pattern Background
Source GDJ
In the spirit of WWDC 2011, here is a dark iOS inspired linen pattern.
Source Atle Mo
Classic vertical lines, in all its subtlety.
Source Cody L
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Alternative colour scheme for the original floral pattern.
Source Firkin
A comeback for you: the popular Escheresque, now in black.
Source Patten
Prismatic Abstract Geometric Background 4
Source GDJ
Seamless Prismatic Quadrilateral Line Art Pattern No Background
Source GDJ
Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton