When the eggs were cooled, the girls and I decorated them with crayon.
Then I mixed together half a cup of water, a tablespoon of vinegar and 20 drops of food colouring (no blue colouring, because that ended up poured into my carpet a month or so ago *curse*). Half of the eggs went into the dye intact, whilst the girls crushed the shells of the other half. We let them sit in the dye for about three hours, turning the eggs occasionally to get even dye.
The solid eggs had a beautiful strong colour.
When we peeled the shell off the cracked eggs, they had a lovely marbled finish, which would have been even stronger if we'd left them in the dye overnight.
Have a great Easter break!