Aquarium case mod

Ooh ooh! I sooo want one of these Aquarium PC Cases. Any ideas how I can justify this to the missus after I spent a whole load of dosh on neon strips and glow-in-the-dark UV cables.

I wonder if they sell it as a kit that I can use with my existing case?

Update: Just found that Thinkgeek.com won’t export that item to the UK but Light Computers, who are only a mile away from me, do sell them. Which is nice.