We’ve done it using the dye kits from the store, the pic is one of the times we did it that way. We’ve also used food coloring and whipped cream which turned out pretty cute, you just put whipped cream in a container and swirl some food coloring in it and roll the egg around, works well for littles but is pretty messy. You just need to let the colored whip cream sit on the egg for a while to give the dye a chance to show up better. We think the brown eggs look like colored rocks when they’re dyed, pretty cool.