I am still searching for that perfect, grey, minimalist background. This is actually based on the three dimensional pattern I created for nanotubes [link] but works it in more as a texture using a relatively high texture channel in the lighting effects. There are three widescreen sizes and one phone format here right now: 2560x1600, 1680x1050, 1440x900 ans 320x480 but others are always possible.

UPDATE #1: Here's an expansion pack with several different colors (suede, plum, olive, aqua, sea foam) an apple logo and a star burst pattern, all at 1680x1050. [link]

UPDATE #2: Here's a full 1280x800 expansion pack with all the colors, apple logo and star burst [link]

UPDATE #3: Here's a full 1440x900 expansion pack with all the colors, apple logo and star burst [link]

UPDATE #4: I have pulled together all the expansion pack files into the main download now.