Instead of using expensive Easter egg dye kits use packets of Kool-Aid instead. It's much less expensive and you don't have to end up with all of the doo dads included in each dye kit package that you'll probably not use. All you need to do is mix one packet of Kool-Aid with 3/4 cup warm water in small glass bowls.
For colors the following Kool-Aid flavors work the best:
red = cherry
orange = orange
yellow = lemonade plus a little bit of orange
green = lime
blue = berry blue