nice, probably could make the case yourself if you have the proper equipment, materials and time or you could buy one some nice skins, even though they're not relevant, they look nice though https://www.skinit.com/pages/xbox-case-mod a general video guide to make a case http://xbox-360.wonderhowto.com/how-to/mod-your-xbox-360-case-378690/ or if you were just asking how they get the top open for hot swaps, then just cut the top off, and remove the top of the drive off
I've done a few xbox`s like that and a ps3 too which is near complete with the mods i'm doing.Here is my consoles i've done .You can do allsorts with a xbox,plenty of guides and so on if ya need help installing leds and so on.