Fastwong
2595
Hah, I saw a Vingt-8 in Niobium years ago. I don't remember exactly what Kari said but I got the sense Niobium was chosen as a -very- subtly unique color experiment somewhere between titanium and tantalum and he didn't really want to make more of them.
I asked again about the Niobium case earlier this year and he said titanium would be great :P