Pisanice are decorated Croatian Easter eggs that comes from an old Slavic custom dating back to pagan times. During Easter, eggs would be painted with bright colors, and would be given as gifts, especially to young children or a significant other. Before paint became common, villagers would have to use whatever resources they had available around them to make the dyes and paints themselves. The most common color for eggs was red, due to the abundance of red beets and other vegetables.
Croation proverb I think this connects to how Zlata treats life. "The forces of war don't know anything about love and the desire to save something. They just know how to destroy, burn, take things away.