I'm pale, DH has olive skin, and DD was born bearing the same (beautiful) olive as her dad. So we got it too "Oh she's identical to her dad". Now, looking at her, and soon after birth, although she has the olive skin, she is a split mix of the both of us that many people can see. Be prepared that if your bub does have olive skin, of your MIL's reaction even if she is identical looking to you!!