Every game developers should have one of the latest blue-tinted Xbox 360 development kit. And as for normal consumers like you and me, sorry to say that the development kit isn’t available for any of us! Unless that you know someone from a reputable gaming company that could get their hands of some of those gaming dev kits from Microsoft, that would make it possible to get one for yourself.
On the other hand, the Xbox 360 dev kit is a sleek black and blue tinted machine and it also comes with stylish etchings as well. And what makes it rather unique is the fact that it comes with 1GB of RAM, which is double of what you will get from the normal retail models.
Take a look at the Xbox 360 dev kit: