You don't need to purchase those boxes of Easter egg tablets to dye your Easter eggs and this is such a fun way for children to learn color wheel basics. This formula is for just one color mixture, so all you have to do is use the same formula for each color if you're planning to make multiple colors of eggs.
Oh, and in case you've forgotten the basics: Yellow and Blue = Green; Yellow and Red = Orange; and Red and Blue = Purple ;-)
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Mix 1/2 cup boiling water, 30 to 40 drops of food coloring, and 1 teaspoon of white vinegar. Let the dye cool completely before dipping eggs.