There's something so lovely about this desktop. I actually uses BeOS back in the day, and I say that to let you kids know to stay off my lawn... it's where I keep my junk, my highly prized, valuable junk...
Anyways, when it comes to DE designs, you just gotta love the minimalistic approach to widgets and buttons. It's so bright and has a somewhat simplified yet classic style.
But is saying that it's based on BeOS a bit disingenuous? Didn't they recreate a lot of it and rely on the Linux kernel? Been a while since I checked in.