The latest XOS versions (Including the current 2.0.1) Have blue backgrounds
As for features and things you can do 100% legally without flashing a BIOS:
Upgrade your HDD for one, flash a cromwell BIOS (From a DVD, from the network, via HTTP, via USB any works fine) and run linux (Which you can install on that new HDD, which can be used with the stock M$ BIOS on your xbox)...
Backup your eeprom to the chip (And restore it from the backup, as well as from a .bin on the HDD/DVD)
Change your video region settings (NTSC/PAL, etc)
You can FTP into your xbox, use it to store files from your PC... You can SMB in and do the same, you can copy your game saves off... You can reboot/shutdown the xbox remotely from any PC...
You can use it to transfer linux over to your machine without even needing to burn a CD or DVD!
And all of this? 100% legal! No need to go IRC hunting, no need to flash an illegal BIOS...
Of course, that's not what most people buy modchips for, but for those whoi want a cheap PC, an xbox running an Xenium and a modchip is one of the easiest ways to go! And its copletely legal!
Providing a chip and OS as easy and powerful as the Xodus team has is no small feat, and providing a completely legal and feature full alternative to the competition is a great asset to the scene in my opinion. If all chip manufacturers released illegal software, M$ would have far more legal standing to take action.. And then guess what? No more modchips... Hmmmmm...
While I'm not one to condone the "bashing" of others, I feel we have to give credit where credit is due.