Blue, definitely. Sky blue and ice blue are my favorite hues. I'd choose violet if it were an option, but people with violet colored eyes are hard to come by. My own are a boring dark brown, like a large % of the world population.
I like brown eyes, it perhaps is because they are not so common where I live and I think they look really deep. My own eyes are really green, not dark nor light and they have a touch of blue.
