Is it possible for light eyed parents to produce a brown eyed baby?

If both parents have green eyes, and all four grandparents have green, blue, or blue-green, could the baby reasonably have brown eyes?Is it possible for light eyed parents to produce a brown eyed baby?
Green eyes is actually the incomplete expression of the Brown dominant allele. Both parents must have at least one brown allele.





A green eyed grandparent has the brown allele somewhere too.





So yes if either parent passes on one copy of the brown allele the baby could have brown eyes. It is more likely that the baby will also inherit the gene that modifies the brown gene for melanin into green as well but not necessary.Is it possible for light eyed parents to produce a brown eyed baby?
Because darker eyes are generally a dominant trait, the scenario you provided is quite unlikely. If either of the parents were carrying the gene for dark eyes, they would likely actually have dark eyes as the trait is dominant.
the gene for brown eyes is dominant, so the baby would only need one gene that codes for brown eyes, however because of this, if one of the parents had the gene that codes for brown eyes they too would have brown eyes, not blue or green.
There has GOT to be an allele for brown eyes in the past generations of that family whether it goes back centuries and centuries.