Why do parends have a diffrent eye color from children?The fact is that genes are passed from parends to children,and why small children change color eye for example blue or green?

My boyfriend, a blue eyed Swede, told me that if we were to have children, he or she would be more likely to get my brown eyes rather than his blue eyes, because the brown eye gene is stronger.  Is this true? And if so, does that mean that one day there will be no more blue eyes in this world?