I have hazel eyes, i.e. they sometimes look green, sometimes brown, depending on light conditions.
But if you look close into my eyes, you will see both colors at the same time: the outer part of my eye has light green and light brown alternate concentric circles, while the inner part (near the pupil) is a web of brown flecks.
When I'm sick or sad - or I just get vinegar into an eye - the tears make green show up. Direct sunlight and neon light give my eyes a nice green hue, too.
The same eyes, instead, look brown under dim light.
Does any of you have similar phenomena? Do you like it? I like my eyes, all in all. (I'd have preferred blue, anyway...)