They all look good, but Blue and Red have a little more flavor to them. If that's what you're going for, go Blue.
Remember, though, silver won't show dust and salt as bad as blue (correct me if I am wrong blue owners). So if you want low maintenance, go silver.
Of course, I went Black for the obvious reason (it looks badass).
Anyhow, I got a TE with KDSS and no nav in the states. Supposedly my dealer got it from one in Idaho, it took about a week and a half to arrive. I heard the nav ain't all that good as far as nav's go and is a lot more expensive. So it is available, just make the dealer work for it.
I just got back from some canyon roads and this beast can take turns nicely.