This color is available in the US. It's a very nice shade of blue and looks even nicer in person.
Btw, the story about ICI not producing silver paint at the moment is just plain bs. I credit that to some creative salesperson at one of the Toyota dealerships. These salespeople are some of the biggest pathological liars on the planet and can come up with the most absurd excuses at a moments notice.
@OP: your wife is right. Please don't go for white. PDM Corolla's white looks absolute crap when compared to that of the PDM Civic (Tafetta White), besides people would think it's an XLi -- that's somewhat of a reflex everyone has developed looking at the mostly white XLi's on the roads in Pakistan.