I remember asking my son when he was seven what the color of my eyes are - hoping he would have noticed that we both have the same very dark brown eyes.

He replied very seriously "Dad, you have red eyes".

I've known my eye color since I was 5 years old. I can't understand how people in today's society don't know that. Is it like an Aspergers thing?

I don't really understand how you can not know the colour (barring turning this metaphysical) unless you live somewhere without any mirrors and even then you'd have to be a very strange child (yes, mathmos, I know) to not be curious enough to ask.

I know the color of my eyes because people told me but I could not pick my kind of green/brown from a set of pictures if you showed me. I just never look at my eyes in the mirror. It might sound weird to you, but thats just as it is. When it comes to other people: I do not know the color of their eyes unless there is something that reminds me (e.g.: we talked about it. someone told me and I remember. ...). I think that is even stronger because I have the tendency to concentrate on people's lips when I talk to them. (at least I once talked about this habit with friends and 100% of those present told me that they look at almost only the eyes of people they have a conversation with.)

This is my left eye: http://dl.dropbox.com/u/381493/photo.jpg I say "green" when people ask me, and they're greenish, but there must be a better name. Anyway, I sympathize with people who don't know their eye color.

Isn't there a webservice that maps colors to names? I vaguely recall an XKCD project.

Not to mention the numerous forms to fill out during ones life that ask it. (Or is that a US thing?)

Some people are not blessed with hazel or sky-blue eyes. I can look into a mirror for an hour, and all I can tell is they are not black, and not blue ...

They have a color, it's somewhere in between blue/brown/grey/green/... whatever. What do I check in a form? Depends on the day and my mood.

BTW: I've heard that the eye-color can change with age, nutrition and other factors. Unfortunately I don't have a reference for that and hand.

My eye color has changed with getting myself drastically healthier. It used to be hazel. It has less yellow and brown in it these days and is closer to just green.

It came up here, http://blog.tanyakhovanova.com/?p=319, I think.