Slovenian Easter Eggs.'tree bark= brown, cooked in tea = shades of green, Dried blackberries = yellowish-orange, hollyhock, logwood, and moss= blue. Natural dyes take hours, and their intensity can be affected by using additional ingredients, like vinegar. Slovenes in different regions use different methods for decorating their Easter eggs and don't agree on a name . southeast, call t "pisanice," the Hungarian border call "rumenice," elsewhere "remenke." generally word "pirhi."