My son's eyes didn't settle down until he was 5, actually.
DH is Korean, Portuguese, and Welsh. His dad had black hair, his mom actually has brown hair (she's full Korean, and had been DYING it all these years, we only found out LAST year when she decided to go grey/white that she actually had brown hair), he has black hair (with a shock of white in the front that literally showed up overnight when he was 17...with black hair, white is obvious, it did not creep in, it was black at bedtime and WHITE in the morning). They all have/had brown eyes, DH's eyes are so dark that only Asian optometrists with mainly Asian clientele have been able to easily find his pupils...the eye docs with the mainly Caucasian practices just don't have the practice with nearly black eyes it seems.
I have dark blue eyes when my dad has ice blue and my mom had...sadly I'm not entirely sure. I think she had blue eyes, isn't that a HORRIBLE thing to forget about your own mother (crying to think of it)? But I think they were blue, a darker than my dad's. But in my dad's siblings, they either have brown or ICE blue eyes, no in betweens with the sibs! My brother got the ice blue. I've been told mine go grey/silver when I'm in certain moods, but usually they are dark blue. My hair is, meh, who knows? I call myself calico. Blond, brown, the occasional black hair, and a touch of red (especially when I'm in sea air). I have black eyebrows (and elsewhere eh hem) which got me accused of dying my eyebrows ('cuz that makes sense) when I was a preteen living in CA and having BLOND hair...the people who said this had known me since I was 6, so that was confusing. Grandfather had auburn hair, it turns out, but I didn't know this until family felt they had to tell me!
Which happened when...DH and I had Ronald McDonald. Bright ORANGE curly hair. With blue eyes. My dad tells me he said "uh oh" when he saw the baby pictures. Nice, dad. Honeymoon baby...dang, dad...
Slowly the blue turned to green...slowly that turned to hazel...slowly that turned to "hmm, his eyes match his hair, but his hair is red, so that doesn't work". I call them amber. Recently I've been more able to call them brown, but they do have a touch of, hmm, orange in them.
And his hair is different colors, too. The front is lighter (which is why I mentioned DH's shock of white hair...it's the exact same spot that went white on DH!) and is a brash copper color that glints in the sun like nothing I've ever seen. Like a copper roof or something. Then it's just red, but at his temples it can go almost blonde or strawberry. In the back, if that's all a person sees, they might think 'brown' if he's inside, but outdoors with sunshine it's a deep red.
Oh, and it doesn't stop there. He's naturally pale. But then he tans. Despite ample amounts of sunscreen (I burn like heck through ample amounts of sunscreen). He goes this lovely light golden color... DH will darken a couple shades inside of a week with walking to and from transit when it's sunny.
We get stopped a lot! Have been stopped like that since he was tiny. Not so pretty when he's along with DH. As a brand new father, DH had a lovely person say "it looks as though you STOLE that child", as DH held my purse, babysling, diaper bag, and baby, *outside the women's changing room* at JCPenney. And he heard someone on the balcony calling the police to report a man who didn't "match" any of the kids, as he played with DS in our apartment complex play area...he came back home quickly. The hardest part about that one is that our city was a very ethnically mixed, Korean, area, and there are LOTS of half and quarter Koreans in town, many many many of whom have reddish hair... Just not the place you'd think that parents needed to "match" their children, ya know?
Anyway, we have the genetics talk with strangers quite often!