I have blue eyes. I like them; think they're pretty. I also have 20/400 vision. I hate that. If some sort of pre-natal therapy had been available to my parents when I was en utero that would have cured the vision issues but altered my eye color, would I want that? Sure. I like my blue eyes, but if I had brown or green or gray eyes my whole life I'd probably be just as emotionally attached to them. And I wouldn't have to hunt down 3 oz. bottles of contact lense solution every time I wanted to fly! But eye color is a pretty trivial part of a person's identity. Not so much for sexual orientation...