I have a Montego Blue E90 335i on order (January delivery) that I've been debating interior colours on. Currently, it's set to be beige, but I've been considering Terra and Black.
I finally found an E90 in Montego blue today at BMW Autohaus in Toronto, and it looked fantastic.
Still stumped on the interior, but at least the colour itself looked incredible. I know alot of people aren't sure how it'll look on the sedan, but at least to me, it was perfect.