The bard, as part of the rogue group, was one of the standard character classes available in the second edition Player's Handbook; in this edition, the bard was regularized.
Also, not all babies are born with blue eyes. Babies of African, Asian, and Hispanic descent are more likely to be born with brown eyes. This is because darker-skinned individuals tend to have more melanin in their eyes than Caucasians. Even so, a baby's eye color may deepen over time.
Likewise, just because both parents have blue eyes, or green eyes, doesn't mean that the baby will inherit the same eye color. This is because humans carry two copies of every gene, one from the mother and one from the father.