http://www.pysanka.com/the_art.php
http://www.learnpysanky.com/designs.html

The Ukrainian pysanka (from the word pysaty, to write) was believed to possess an enormous power not only in the egg itself, which harbored the nucleus of life, but also in the symbolic designs and colors which were drawn upon the egg in a specific manner, according to prescribed rituals. The intricately colored eggs were used for various social and religious occasions and were considered to be a talisman, a protector against evil, as well as harbingers of good.
http://www.ukrainianmuseum.org/pysanky.html