The belief is that the firecrackers will scare off evil spirits, witches or ghosts that may be close. Others do it as a symbolic representation of bright, glorifying sun rays that mean hope and triumph over death and darkness in the world. In some countries, the ringing of church bells on Easter Sunday or every day of Easter week represents the announcement of the new life Spring brings and also to frighten off the spirits of darkness and evil. However, in areas that are not so civilized, they still ring a bell as a celebration noise. According to religious scholars, the ancient Egyptians, Persians, Phoenicians, Hindus and others believed that the world was one big egg.
Egg is accepted as a symbol of fertility and immortality.
So it is easily seen by it goes with Spring when things sprout back to life. But once again, we go back to this belief of keeping evil spirits away and so if you painted the egg it would persuade the evil spirits who brought bad luck to leave you alone. And, the good helpful spirits would be attracted to the pretty eggs and come to help you. Coloring and dying eggs can be simple or elaborate. And of course the most famous jeweled eggs were done by Peter Carl Faberge in St. Petersburg during the the late 19th century and early 20th century.