Here you have some of the backgrounds we are currently using in different computers.
Personally I like the Digital Ops Group Stealth background the best.
Digital Ops Group Stealth. Download.
Digital Warfare Multicam. Download.
Digital Warfare. Download.
Red Teams Multicam. Download.
If you have a good background with the Red Teams logo, or the other logos, please send it to redteamsblog@gmail.com. It'll be open for email for only 24 hours. After than, all emails get deleted automatically.