ATELIER PIERRE - Nachtlicht Geisterjäger myBooI am a friendly spirit and I am there to protect children from bad spirits. How does myBOO work? 1. First, I look for ghosts in the room and chase away the bad ones. Then I'm red. 2. If my color is blue, I'm only looking for good spirits. 3. When I'm sure there's no more ghosts in the room, I turn green. 4. At the end, my color changes to white, which means I keep the children company and protect them while they sleep. Good night and sleep well!