The BFL (Bolt Face Logo) is a registered trademark and yes, 100% protected.
For public use like this, there's no need for us to get involved. I'll eventually get around to creating a "fair use" page which states that for personal use in electronic media a logo no larger than XXX pixels is acceptable without permission. This obviously will only include personal use, nothing business related, money related (even non-profit), and so forth. The goal has always been to protect a clear and easily recognizable symbol of this community and we work hard to protect it. (Trust me!)
So for this instance, no permission needed, but you have it. Feel free to make an in-game spray, avatar, icon, desktop backgrounds, etc for any electronic device, cell phone, computer, video games, etc which are for personal use only. Any redistribution or sale of a personal item with the logo without consent is in violation. (No, if you left the background on your phone when you sold it, we wont care. Be realistic here.)
Hope that helps!
Locking the thread to avoid chaos and mass hysteria.