Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
Very simple, very blu(e). Subtle and nice.
Source Seb Jachec
With a name this awesome, how can I go wrong?
Source Nikolay Boltachev
Bright Multicolored Floral Background by Karen Arnold from PDP.
Source GDJ
Zero CC tileable pine bark texture, photographed and made by me. CC0
Source Sojan Janso
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Retro Circles Background 7 No Black
Source GDJ
No idea what Nistri means, but it’s a crisp little pattern nonetheless.
Source Markus Reiter
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Light gray pattern with an almost wall tile-like appearance.
Source Markus Tinner
Feel free to download this "Dark Wood" background texture for your web site. The background tiles seamlessly!
Source V. Hartikainen
Abstract Tiled Background Extended 10
Source GDJ
From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
A version without colours blended together to give a different look.
Source Firkin
The perfect pattern for all your blogs about type, or type-related matters.
Source Atle Mo
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
Nicely crafted paper pattern, although a bit on the large side (500x593px).
Source Blaq Annabiosis
Alternative colour scheme for the original floral pattern.
Source Firkin
I love the movie Pineapple Express, and I’m also liking this Pineapple right here.
Source Audee Mirza