Candle making

My husband wouldn't tell me what he was doing so I didn't know what to expect when I got home from work. I opened up the door to the house and I could smell something that I hadn't smelled before. My husband and my son were experimenting with making different types of special candles. They had this one gallon glass jar 3/4 filled with water they were boiling different colors of wax then dripping it into the jar of water. Once they were done they poured the water out and then filled the voids with fluorescent green wax to make one very special candle.