COLOUR ME A HAT MAGIC TRICK

Magician shows an envelop with a rabbit picture. The rabbit in picture comes out from a white hat. Magician takes out the picture from envelop & puts it on table face down. Then he shows a chart of 4 different colours hat pictures. He tells public to choose a number between 1-4. According to public choosen no he opens the chart again & shows that the selected hat according to number is vanished & white hat comes their. Then he turns the rabbit picture & shows that the selected hat is their magically.