Many of these recipes have come from my old recipe files, I do not have sources for them. Others are from "Healthy Yummies for Young Tummies" (a collection of recipes for children and families).
In all cases, eggs should be simmered about 12 minutes and allowed to cool in the pans. Polish the finished (and dried) eggs with vegetable oil. Here are the colors and ratios of ingredients to use.
Gold-3 tablespoons of chili powder, 1 quart water, 4 teaspoons vinegar.
Blue, Purple, and Pink-4 cups of berries, 2 cups of water, 4 teaspoons vinegar.
Rose-Hard boil the eggs and cool. Cut beets into 1" slices and rub on the eggs. Let dry.
Marbleized-Wrap dry onion skins around uncooked eggs and tie with a "twisty". Simmer for 15 minutes and allow to cool in the water.