This is a "trick" to trick the birthday boy/girl. After clicking the green flag, there will be a sentence saying: "Open the box, there's a gift for you..."But every time you click the present box, it always show the same one but with different colours only. To activate the right one, you need to click the "gift" word with magenta color. Use this project to trick them :)
Actually this project was made as a birthday gift for my mother, but I also decided to share it.