Do you know someone who doesn't know their eye color?

Is there a name for every eye color? Usually, it’s quite obvious. Someone has brown eyes or blue eyes.. there is just no question. I don’t think that is always the case, though.
I ask, because, I don’t actually know what color my eyes are. I often say that they are grey, or green… but most of my life people called them blue. My license says they are green, but I think they might be grey. I’m not really sure. I have met other people with the same issue, so, I’m curious to know how common it is.
Do you know someone who has a unique eye color that is difficult to categorize? Do you have a unique eye color?