Well, I have a few pieces of titanium at my desk, but they have all been sandblasted. Still silver/gray though. A presentation model like that probably would have been polished at some point, at which point it should look close to polished aluminum, just a little less bright.
There are many different alloys of titanium, and I haven't seen them all, especially not from 1956, but I've never seen an alloy to be anything but silver/gray.
What we can't tell from the photo is how correctly the colors were reproduced, or in fact how well the colors are adjusted on my monitor.
Quote:
http://en.wikipedia.org/wiki/Titanium
Titanium nitride (TiN), having a hardness equivalent to sapphire and carborundum (9.0 on the Mohs Scale),[20] is often used to coat cutting tools, such as drill bits.[21] It also finds use as a gold-colored decorative finish, and as a barrier metal in semiconductor fabrication.[22]
And:
http://en.wikipedia.org/wiki/Titanium_nitrideMaybe that explains it?