... mug,advertising color changing Add cold water, the picture outside will magic change ON temperature; 8°C,12°C,15°C,22°CColor changing glass, Glass mug ... into the mug.2. Material of glass: is best effect for color changing3. We have different temperature color changing oil, Such ... C,38°C,43°C,55°C,65°C color changing temperatureCold Color Changing Mug:Flower Series, Fruit Series, Season Series, Animals ...