Explaining a Process-2

I am going to show that black is a better collector of solar energy than white.  All you need are two tin cans, black and white paint, and room thermometer.  First of all, paint the cans-one black, one white.  Then, fill the cans with water.  After that, put the cans in direct sunlight for three hours.  Finally, check the temperature of the water in the cans and compare.  You will find that the temperature of the water in the black can is higher.  This proves enough that black is a better collector of solar energy than white.