I've had the following phones/colors:
3G - white/silver
4s - white/silver
5 - white/silver
6 - space gray
SE - white/silver
8 - white/silver
Xs - white/silver
When they released the green last year, I thought to myself that navy would've been a better choice, and now it looks like we might get it.
This is the second time in history I might be tempted by a color other than white/silver, but I already know I won't like the rubbery feeling of the PVD on the stainless, and will probably end up going with the oh-so-clean and classic white/silver again.