Is the synth kid, Shaun, you meet at the Institute supposed to have the same ethnicities as the sole survivor and his or her dead spouse? I played as a white character, so when I saw that Shaun the synth was white, I wasn't surprised. But then I noticed something wasn't right. That kid looked like all the other kids in the game! So is he supposed to look generic like that, or different? If you play as a black character, will you see a black kid at the Institute, or the same generic kid like all the other kids? Since the Institute uses human DNA to create the synths, their creations should not look generic at all.
For that matter, will the grown-up Shaun (i.e. Father) be black if both you and your spouse are/were black? He should be for the story to make sense, right?